Pre-Voyage Procedures, Principles of Celestial Navigation, Terrestrial Navigation,

Question 1

A ship steaming on a course of 246˚ T at 17 knots. At 2107 a lighthouse was observed bearing 207 deg T and at 2119 the same lighthouse bears 179˚ T. What is the ship’s distance off at second bearing?

Answer 1

4.6 miles

Question 2

A ship is steaming a course of 090˚ T at a speed of 14 knots. At 1841H you observed a lighthouse bearing 053 deg.T and at 1904H, the same lighthouse bears 031˚ T. What is the distance to the lighthouse when abeam?

Answer 2

7.4 miles

Question 3

Aship is steaming a course of 090˚T at a speed of 14 knots. At 1841, you observed a lighthouse bearing 053°T and at 1904, the same lighthouse bears 031˚T. What will be the time when the lighthouse is abeam of your vessel?

Answer 3

1923

Question 4

You are steaming on course 090˚T at 14 knots when a lighthouse was observed bearing 053˚ T at 1841. The same lighthouse bears 031˚T at 1904. What is the distance off the lighthouse at second bearing?

Answer 4

8.6 miles

Question 5

A ship is on course 253˚ T at 14 knots. At 2329 a lighthouse was observed bearing 282˚ T At 2345 the same lighthouse bears 300 deg.T Find the ship’s distance off at second bearing?

Answer 5

5.9 miles

Question 6

You are steering 078˚ T, and a light was seen dead ahead at a distance of 15.6 miles at 2316 you change course to pass the light abeam to port at a distance of 4.5 miles. If you are making 17 knots, what is the time when abeam of the light?

Answer 6

0009H

Question 7

You are steering 031˚ T, and a light was seen dead ahead at a distance of 12.7 miles at 0017H you change course to pass the light abeam to starboard at a distance of 3.5 miles. If you are making 11 knots, what is the time when abeam of the light?

Answer 7

0124H

Question 8

You are steering 173˚T and a light was picked up dead ahead at a distance of 13.9 miles at 0054. You change course to pass the light 4.5 miles off abeam to port. If you making 21 knots, what will be the time when abeam of the light?

Answer 8

0131H

Question 9

You are steering 163˚ T and a light was picked up dead ahead at a distance of 11 miles at 0142. You change course to pass the light 2 miles off abeam to starboard. If you making 13 knots, what will be the time when abeam of the light?

Answer 9

0232H

Question 10

A vessel was steaming on a course 168˚ T at a speed of 18 knots. At 1426H a buoy was sighted bearing 144˚ T . At 1434 another bearing of the buoy was taken at 116˚ T. What is the distance off the second bearing and the predicted distance when abeam?

Answer 10

2.0 miles,2nd bearing; 1.8 miles abeam

Question 11

You desire to make good a true course of 067˚T.The variation is 11˚ West, the magnetic compass deviation is 3˚ East and the gyro error is 1˚ West. A northwesterly wind produces a 5 degree leeway. What should be the course to steer per standard compass to make good the true course?

Answer 11

070 psc

Question 12

You desire to make good a true course of 129˚T. The variation is 7˚ East, magnetic compass deviation is 4˚ East and the gyro error is 2˚ West. An easterly wind produces a 4 degree leeway. What should be the course to steer per magnetic compass in order to make good the true course?

Answer 12

114 psc

Question 13

The True course between two points is 023˚T The gyro error is 1˚West and you make an allowance of 4 degree leeway for an East wind. What gyro course should be steered in order to make the True course good?

Answer 13

026 pgc

Question 14

The True course between two points is 041˚T. The gyro has an error of 1˚ West. You make an allowance of 2 degree leeway for an east-southeast wind. What gyro course should be steered to make the True course good?

Answer 14

044 pgc

Question 15

Your vessel is steering a course of 027˚ psc. The variation for the locality is 19˚ West and the deviation of the compass is 2˚ East. The wind is from the North-northwest, producing a 5 degree Leeway. What True course are you making good?

Answer 15

015 T

Question 16

A ship was on course 253˚ T at 14 knots. At 2329 a lighthouse was observed bearing 282˚ T At 2345, the lighthouse bears 300˚ T. What is the ship’s distance off the second bearing and distance when abeam?

Answer 16

5.9 mi./ 4.3 mi.

Question 17

You are steering 019˚T, and a light was picked up dead ahead at a distance of 11.6 miles at 0216H. You change course to pass the light 3 miles off abeam to port. If you are making 14 knots, what is your ETA at the position 3 miles off the light?

Answer 17

0304H

Question 18

You are steering 231˚ T, and a light is picked up dead ahead at a distance of 12.3 miles at 0338H. You then change course to pass the light 4 miles off abeam to starboard. If you are making 16.5 knots, what is your ETA at the position 4 miles off the light?

Answer 18

0420H

Question 19

You are steering 287˚T and a light was picked up dead ahead at a distance of 19.4 miles at 0419H. You change course to pass the light 4 miles off abeam to starboard. If you are making 13 knots, what is your ETA at the position 4 miles off the light?

Answer 19

0547H

Question 20

You are steering 115˚ T, and a light was picked up dead ahead at a distance of 16.7 miles at 0522. You change course to pass the light 3.5 miles off abeam to port. If you are making 12 knots, what is your ETA at the position 3.5 miles off the light?

Answer 20

0644H

Question 21

Your ship is sailing at 20 knots on course 160˚T. At 1840 hours you observe a lighthouse bearing 205˚ T. At 1908 hours, the light bears 250˚ T. What is your distance off the lighthouse at the second bearing?

Answer 21

9.3 miles

Question 22

Your ship is sailing on course 250˚ T at 20 knots. At 1418 hours you observe a lighthouse bearing 205˚T At 1446 hours, the same lighthouse bears 160˚ T. At what distance off will your vessel be abeam of the light?

Answer 22

9.3 miles

Question 23

Your vessel is on course of 343˚T at 14 knots. At 2156H a light bears 320.5˚T and at 2217H the same light bears 298˚T. At what time and at what distance off will your vessel be abeam of the light?

Answer 23

2232H, 3.4 miles

Question 24

Your vessel is proceeding down a channel and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 229˚T and the variation is 6˚ West. If the heading of your vessel at the time of the sighting is 232˚ psc, what is the correct deviation?

Answer 24

3 deg. East

Question 25

While proceeding up a channel on a course of 350˚ pgc you took a bearing on a pair of range lights and got a bearing of 355˚ pgc. The true bearing on the nautical chart is indicated as 357˚T. The variation for the locality is 22˚ West. The ship’s course psc is 015˚. The deviation on the present heading is ______.

Answer 25

1 deg. West

Question 26

Your vessel is steering a course of 216˚ psc. Variation for the area is 9˚ West and the deviation is 2˚ East. The wind is from East producing a 5˚ leeway. What true course are you making good?

Answer 26

214 deg True

Question 27

Your vessel is steering a course of 197˚ psc, variation for the area is 7˚ East and the deviation is 4˚ West. The wind is from the West producing a two-degree leeway. What true course are you making good?

Answer 27

198 deg True

Question 28

You desire to make good a true course of 203˚ T. The variation is 19˚ East, the magnetic compass deviation is 2˚ West and the gyro compass error is 1˚ East. What should be the compass course to steer per standard magnetic compass to make the true course good?

Answer 28

189 psc

Question 29

You desire to make good a true course of 007˚ True. The variation is 5˚ East, deviation is 3˚ West and the gyro compass error is 2˚ East. A Southwest by west wind produces a 2 degree leeway. What is the course to steer per standard magnetic compass to make the true course good?

Answer 29

003 deg psc

Question 30

Your vessel is proceeding up a channel and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 212˚ T and the variation is 7˚ West. If the heading of your vessel at the time of of the sighting 208˚ per standard magnetic compass, what is the correct deviation?

Answer 30

11 deg. East

Question 31

Your vessel is proceeding up a channel and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 014˚ T and the variation is 11˚ East. If the heading of your vessel at the time of sighting is 009˚ per standard magnetic compass, what is the correct deviation?

Answer 31

6 deg. West

Question 32

Your vessel is proceeding up a channel and you see a pair of range lights that are in line ahead. The nautical chart indicates that the direction of this pair of lights is 343˚ T and the variation is 5˚ West. IF the heading of your vessel at the time of sighting is 344˚ per standard magnetic compass, what isthe correct deviation?

Answer 32

4 deg. East

Question 33

While your vessel is proceeding down a channel you notice a range of lights in line with your vessel’s mast. If your vessel is on course 001˚ per gyro compass and the charted value of the range lights is 359˚ True, find your gyro compass error.

Answer 33

2 deg. West

Question 34

The true course between two waypoints is 078˚ Your gyrocompass has an error of 2˚ East and you make anallowance of 3 degree leeway for a North wind. You are at present on auto pilot. What gyro course should be set on your gyro pilot in order to make good the true course?

Answer 34

073 pgc

Question 35

The true course between two waypoints is 312˚T. Your gyrocompass has an error of 3˚ West and you make an allowance of 4 degree leeway for a west by south wind. At present you are on auto-pilot. What gyro course should be set on your gyro pilot to make the true course good?

Answer 35

311 pgc

Question 36

A true course of 041˚ between two waypoints is plotted on the nautical chart. At that moment the wind is blowing from East-southeast which would require you to make an allowance of 2˚ to compensate the effect of the wind. Your gyro compass has an error of 1˚W. What gyro course should be steered to make the true course good?

Answer 36

044 pgc

Question 37

The course line plotted on the chart indicates that the true course between the 2 waypoints is 119 deg.T. Your gyro compass has an error of 3 deg. East and you have to make an allowance of 4 deg. leeway for a south-southwest wind. What gyro course should be steered to make the true course good?

Answer 37

120 pgc

Question 38

While proceeding up a channel on a course of 010˚ per gyro compass you notice a pair of range lights in alignment with the masts of your vessel when viewed forward. A check on the chart shows the range to be 009˚ T and the variation on the compass rose to be 15˚W. If the ship’s course is 026˚ psc, what is the deviation on the present heading?

Answer 38

2 deg. West

Question 39

Your ship is entering a channel on a magnetic course of 265˚ with two beacons in range. The true range bearing as taken from the chart is 264˚. If the variation in the locality is 1˚ East, what is the deviation of the magnetic compass?

Answer 39

2 deg. West

Question 40

What is the true bearing of the peak to be plotted as a line of position (LOP) on the chart when the compass bearing of the peak is 336˚ with a variation of 1˚ East and the deviation is 5˚ West?

Answer 40

332 deg.T

Question 41

The compass bearing of a mountain peak was taken as 336˚. The variation is 15˚ West and the deviation is 9˚ West. The true bearing of the peak as plotted on the chart is:

Answer 41

312 deg T

Question 42

What is the deviation of the compass on heading 053˚ T when steering 044 per steering compass to a beacon in range dead ahead with variation in the locality of 4 deg. W?

Answer 42

13 deg.East

Question 43

You have just taken a satellite fix on your ship and from there the Master traced a new course line on the chart which is 130˚ True. The variation for the locality is 10˚ West and the deviation is 6˚ East. Find compass error and then solve for the compass course to steer.

Answer 43

C/E = 4 deg.West Compass Co. = 134 psc

Question 44

A ship is on course 250˚ psc, deviation is 18˚ East, variation of the locality is 7˚ East. Find the compass error and the true course.

Answer 44

C/E = 25 deg. East True co. = 275 T

Question 45

A ship is on course 241˚ psc and 251˚ pgc, when you noticed a range in line bearing 192˚ by gyro. The chart indicates that the range is in line on 194˚ T. The variation of the locality is 16˚ East. What is the deviation of the magnetic compass?

Answer 45

4 deg. W

Question 46

Your vessel is steering a course of 216˚ psc. Variation for the area is 9˚ West and the deviation is 2˚ East. The wind is from East producing a 5˚ leeway . What is the true course made good (TCMG)?

Answer 46

214 deg.T

Question 47

Find the compass course to steer(CCTS) on a True course of 225˚ T. Leeway due to a Southerly wind is 10 degrees. The Variation on the locality is 5˚ East, deviation of the compass is 4˚ East.

Answer 47

206 deg. Psc

Question 48

You are enroute to assist vessel B. Vessel B is underway at 5 knots on course 063˚ T and bears 136˚T at 78 miles away from you. What is the course to steer at 13 knots to intercept vessel B?

Answer 48

114 deg. T

Question 49

You are enroute to assist vessel B. Vessel B is underway at 4.5 knots on course 233˚ T and bears 264˚ T at 68 miles away from you. What is the course to steer at 13 knots to intercept vessel B?

Answer 49

256 deg.T

Question 50

You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033˚ T and bears 248˚ T at 64 miles from you. What is the course to steer at 13 knots to intercept vessel A?

Answer 50

262 deg.T

Question 51

You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033˚ T and bears 284˚ T at 43 miles from you. What is the course to steer at 16 knots to intercept vessel A?

Answer 51

303 deg.T

Question 52

You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233˚ T and bears 346˚ T at 68 miles from you. What is the course to steer at 13 knots to intercept vessel A?

Answer 52

328 deg.T

Question 53

The position obstained from one point relative to another, without considering the distance between them is called _______.

Answer 53

Direction

Question 54

Course is the direction of movement of the observer while the direction of an object from the observer is called ______.

Answer 54

Bearing

Question 55

The direction of an object from the observer is known as bearing while the direction of movement of the observer is called _____.

Answer 55

Course

Question 56

The bearing relative to the heading of a vessel which is expressed as the angular difference between heading and the direction is called ______.

Answer 56

Relative Bearing

Question 57

The direction in which a vessel is steered is called the course while the path that is actually followed by the vessel is called the ______.

Answer 57

Course over ground

Question 58

You are course 027˚T and took a relative bearing of a lighthouse and found to be 220˚. What is the True bearing of the lighthouse?

Answer 58

247 deg.T

Question 59

You are on course 344˚ T and took a relative bearing of a lighthouse of 270˚. What is the True bearing of the lighthouse?

Answer 59

254 deg.T

Question 60

You are on course 277˚ T and took a bearing of a lighthouse of 045˚ R. What is the True bearing of the lighthouse?

Answer 60

322 deg.T

Question 61

What is the relative bearing of an object broad on port quarter?

Answer 61

225 deg

Question 62

What is the relative bearing of an object that is broad on starboard bow?

Answer 62

045 deg

Question 63

If you take a bearing of 176˚ to a lighthouse, what other bearing of another conspicuous object would give the best fix?

Answer 63

079 deg

Question 64

If you take a bearing of 264˚ to a lighthouse, what other bearing of another conspicuous object would give the best fix?

Answer 64

350 deg

Question 65

If you take a bearing of 356˚ to a lighthouse, what other bearing of another prominent object would give the best fix?

Answer 65

082 deg.

Question 66

What is the relative bearing of an object which is two points abaft the starboard beam?

Answer 66

112.5 deg.

Question 67

What is the relative bearing of an object which is two points abaft the port beam?

Answer 67

247.5 deg

Question 68

What is the relative bearing of an object located dead astern?

Answer 68

180 deg

Question 69

If you take a bearing of 191˚ and 313˚ to two prominent objects, what bearing of a third object will provide the best fix?

Answer 69

069 deg

Question 70

If you take a bearing of 142˚ and 259˚ to two prominent objects on shore, what bearing of a third object will provide the best fix?

Answer 70

201 deg

Question 71

If you take a bearing of 313˚ and 076˚ of two prominent objects, what bearing of a third object will provide the best fix?

Answer 71

014 deg.

Question 72

You are taking bearings on two known objects on shore. The best fix is ontained when the angle between the lines of position is:

Answer 72

90 deg

Question 73

If you take a bearing of 086˚ to a lighthouse, what other bearing of another prominent object would give the best fix?

Answer 73

000 deg

Question 74

If you take a bearing of 176˚ to a lighthouse, what other bearing of another prominent object would give the best fix?

Answer 74

079 deg

Question 75

If you take a bearing of 264˚ to a lighthouse, what other bearing of another prominent object would give the best fix?

Answer 75

350 deg

Question 76

If you take a bearing of 356˚ to a lighthouse, what other bearing of another fixed object on shore would give the best fix?

Answer 76

082 deg.

Question 77

If you take a bearing of 043˚ and 169˚ to two prominent objects ashore, what bearing of a third object will provide the best fix?

Answer 77

102 deg

Question 78

If you take a bearing of 135˚ to a prominent object, which other bearing of another object will NOT provide the best fix?

Answer 78

315 deg

Question 79

If you take a bearing of 225˚ to a prominent object on shore, which other bearing of another prominent object will NOT provide the best fix?

Answer 79

045 deg

Question 80

If you take a bearing of 045˚ to a prominent object on shore, which other bearing of another prominent object will NOT provide the best fix?

Answer 80

225 deg

Question 81

If you take a bearing of 315˚ to a conspicuous object on land, which other bearing of another object will NOT provide the best fix?

Answer 81

135 deg

Question 82

If you take a bearing of 249˚ to a fixed known object on shore, which other bearing will NOT give a good fix?

Answer 82

069 deg

Question 83

If you take a bearing of 086˚ to a lighthouse, which other bearing of another prominent object will NOT give a good fix?

Answer 83

266 deg

Question 84

If you take a bearing of 176˚ to a lighthouse, which other bearing of another prominent object will NOT give a good fix?

Answer 84

356 deg

Question 85

If you take a bearing of 191˚ to a prominent object ashore, which bearing of another object will NOT provide a good fix?

Answer 85

011 deg

Question 86

If you take a bearing of 264˚ to a lighthouse, which other bearing of another prominent object will NOT produce a good fix?

Answer 86

084 deg

Question 87

If you take a bearing of 142˚ to a lighthouse, which other bearing of another lighthouse will NOT produce a good fix?

Answer 87

322 deg

Question 88

If you take abearing of 259˚ to a fixed known object on shore, which of the following bearings of other objects will NOT produce a good fix?

Answer 88

079 deg

Question 89

If you take a bearing of 322˚ to a fixed charted object on shore, which of the following bearing of another object will NOT provide a good fix?

Answer 89

142 deg

Question 90

If you take a bearing of 145˚ to a fixed charted object on shore, which of the following bearing of another object will NOT provide a good fix?

Answer 90

325 deg

Question 91

Which of the following bearings of two prominent objects when taken simultaneously will provide a good fix?

Answer 91

144 deg and 236 deg

Question 92

Which of the following bearings of two fixed objects on shore when taken simultaneously will provide a good fix?

Answer 92

228 deg and 136 deg

Question 93

Which of the following bearings of two lighthouses when taken simultaneously will provide a good fix?

Answer 93

184 deg and 275 deg

Question 94

Which of the following bearings of two fixed and charted objects will provide a good fix when taken at nearly the same time?

Answer 94

119 deg and 207 deg

Question 95

Which of the following bearings of two fixed and charted objects will provide a good fix when taken at nearly the same time?

Answer 95

131 deg and 040 deg

Question 96

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 96

136 deg and 228 deg

Question 97

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 97

275 deg and 184 deg

Question 98

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 98

207 deg and 119 deg

Question 99

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 99

040 deg and 131 deg

Question 100

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 100

128 deg and 218 deg

Question 101

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 101

345 deg and 280 deg

Question 102

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 102

209 deg and 285 deg

Question 103

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 103

023 deg and 102 deg

Question 104

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 104

120 deg and 042 deg

Question 105

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 105

005 deg and 056 deg

Question 106

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 106

313 deg and 076 deg

Question 107

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 107

142 deg and 259 deg

Question 108

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

Answer 108

169 deg and 048 deg

Question 109

A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 321˚. The vessel is “on range” when she is steering a course of ______.

Answer 109

321 deg.T

Question 110

A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 108˚. The vessel is “on range” when she is steering a course of ______.

Answer 110

108 deg.T

Question 111

A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 243˚. The vessel is “on range” when she is steering a course of ______.

Answer 111

243 deg.T

Question 112

A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 041˚. The vessel is “on range” when she is steering a course of ______.

Answer 112

041 deg.T

Question 113

A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 287˚. The vessel is “on range” when she is steering a course of ______.

Answer 113

287 deg.T

Question 114

A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 001˚. The vessel is “on range” when she is steering a course of ______.

Answer 114

001 deg.T

Question 115

A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 154˚. The vessel is “on range” when she is steering a course of ______.

Answer 115

154 deg.T

Question 116

A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 256˚. The vessel is “on range” when she is steering a course of ______.

Answer 116

256 deg.T

Question 117

Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 20 minutes. What current are you experiencing?

Answer 117

A following current of 0.9 knot

Question 118

Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 15 minutes. What current are you experiencing?

Answer 118

A following current of 1.3 knots

Question 119

Course is the direction of movement of the observer while the direction of a current from the observer is called ______.

Answer 119

set

Question 120

Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 30 minutes. What current are you experiencing?

Answer 120

slack

Question 121

Your vessel is making way through the water at a speed of 10 knots. Your vessel traveled 30 nautical miles in 2 hours 30 minutes. What current are you experiencing?

Answer 121

A following current of 2.0 knots

Question 122

Your vessel is making way through the water at a speed of 14 knots. Your vessel traveled 30 nautical miles in 2 hours 24 minutes. What current are you experiencing?

Answer 122

A head current of 1.5 knots

Question 123

Your vessel is making way through the water at a speed of 14 knots. Your vessel traveled 55 nautical miles in 3 hours 24 minutes. What current are you experiencing?

Answer 123

A following current of 2.2 knots

Question 124

Your vessel is making way through the water at a speed of 14 knots. Your vessel traveled 46 nautical miles in 3 hours 24 minutes. What current are you experiencing?

Answer 124

A head current of 0.5 knot

Question 125

Your vessel is making way through the water at a speed of 16 knots. Your vessel traveled 45 nautical miles in 2 hours 30 minutes. What current are you experiencing?

Answer 125

A following current of 2 knots

Question 126

Your vessel is making way through the water at a speed of 16 knots. Your vessel traveled 56 nautical miles in 3 hours 30 minutes. What current are you experiencing?

Answer 126

current is slack

Question 127

At 0000H you fix your position and change course to 090˚T At 0030H, you again fix your position, and it is 0.5 miles east of your DR position. Which statement is true?

Answer 127

The current is easterly

Question 128

At 0000H you fix your position and change course to 270˚T At 0030H, you again fix your position, and it is 0.5 miles east of your DR position. Which statement is true?

Answer 128

The set is 090, drift 1.0 knot

Question 129

At 0000H you fix your position and plot a new DR trackline. At 0200H, you again fix your position, and it is 0.5 miles west of your DR position. Which statement is true?

Answer 129

The set is 270, drift 0.25 knot

Question 130

At 0000H you fix your position and plot a new DR trackline. At 0200H, you again fix your position, and it is 0.5 miles west of your DR position. Which statement is true?

Answer 130

The drift is 0.25 knot

Question 131

At 0000H you fix your position and change course to 090˚ T At 0030H, you again fix your position, and it is 0.5 miles west of your DR position. Which statement is true?

Answer 131

The current is westerly

Question 132

At 1200H you fix your position and change course to 000˚ T At 1230H, you again fix your position, and it is 0.5 miles east of your DR position. Which statement is true?

Answer 132

The current is easterly

Question 133

At 1100H you fix your position and change course to 000˚T At 1130H, you again fix your position, and it is 0.5 miles west of your DR position. Which statement is true?

Answer 133

The current is westerly

Question 134

At 0000H you fix your position and change course to 180˚T At 0100H, you again fix your position, and it is 1.5 miles north of your DR position. Which statement is true?

Answer 134

The current is northerly

Question 135

At 1000H you fix your position and change course to 180˚T At 1030H, you again fix your position, and it is 0.5 miles south of your DR position. Which statement is true?

Answer 135

The current is southerly

Question 136

At 0900H you fix your position and change course to 135˚T At 0930H, you again fix your position, and it is 0.5 miles southwest of your DR position. Which statement is true?

Answer 136

The current set is 225 deg.

Question 137

At 0000H you fix your position and change course to 225˚T At 0130H, you again fix your position, and it is 0.5 miles northwest of your DR position. Which statement is true?

Answer 137

The current set is 315 deg.

Question 138

At 0800H you fix your position and change course to 045˚T At 0830H, you again fix your position, and it is 0.5 mile southeast of your DR position. Which statement is true?

Answer 138

The current set is 135 deg.

Question 139

At 0105H you fix your position and change course to 135˚T At 0135H, you again fix your position, and it is 0.5 mile southeast of your DR position. Which statement is true?

Answer 139

Dirft = 1.0 knot; Current Set = 135 deg.T

Question 140

At 1200H you fix your position and change course to 315˚T At 1225H, you again fix your position, and it is 0.9 mile southwest of your DR position. Which statement is true?

Answer 140

Drift = 2.1 knots; Current Set = 225 deg.T

Question 141

At 0300H you fix your position and change course to 225˚ At 0315H, you again fix your position, and it is 0.5 miles northwest of your DR position. Which statement is true?

Answer 141

Drift = 2 knots; Current Set = 315 deg.T

Question 142

At 0400H you fix your position and change course to 045˚T At 0450H, you again fix your position, and it is 1.0 mile northeast of your DR position. Which statement is true?

Answer 142

Drift = 1.2 knots; Current Set =045 deg. T

Question 143

A vessel is to proceed at 12 knots on a course of 211˚T through a current estimated to be setting at 255˚T and a drift of 3 knots. Find Course To Steer (CTS) and the speed of advance (SOA).

Answer 143

CTS = 199 deg.T; SOA = 10 knots

Question 144

You desire to make good a course of 062˚T to a destination 4.7 miles away. Your speed is 3 knots. The Tidal Current Table lists a set of 120˚T and a drift of 1 knot for the time period you will be making the passage. Find your course to steer (CTS) an

Answer 144

CTS = 046 deg.T; SOA = 3.3 3.3 knots

Question 145

The anchorage is located 20 nautical miles North of a vessel with a speed of 15 knots. A current is known to set 3 knots Easterly. Calculate the course to steer in order to drop her anchor to the charted anchorage on the spot.

Answer 145

349 deg.

Question 146

You are underway on course 180˚T at 22 knots. The apparent wind is from 70 deg. off the port bow, speed 20 knots. What is the true direction and speed of the true wind?

Answer 146

051 deg.T; 24.1 knots

Question 147

You are underway on course 270˚T at 10 knots. The apparent wind is from 10 deg. off the port bow, speed 30 knots. What is the true direction and speed of the true wind?

Answer 147

225 deg.T; 20 knots

Question 148

Your ship is on course 195˚T at 15 knots. The apparent wind is from 40 deg. on the port bow, speed 30 knots. The direction and speed of the true wind are:

Answer 148

027 deg.T; 21 knots

Question 149

Your ship is proceeding on course 150˚T at a speed of 17 knots. The apparent wind is from 40 deg on your starboard bow, speed 15 knots. Calculate the True wind direction and speed.

Answer 149

270 deg.T; 11 knots

Question 150

Your vessel’s course is 150˚T at 17 knots. The apparent wind is from 40 deg. off the starboard bow, speed 15 knots. What is the speed of the true wind?

Answer 150

11 knots

Question 151

When a body has crossed the observer’s meridian, this is called:

Answer 151

any of these

Question 152

During meridian passage, the LHA and meridian angle of the body is zero. What is its altitude?

Answer 152

maximum altitude

Question 153

To a certain observer, a meridian transit can be at: I. upper transit only II. Lower transit only

Answer 153

both I and II

Question 154

A body will be observed at lower transit only :

Answer 154

if the body is circumpolar

Question 155

At lower transit, the body’s altitude is at its minimum bearing North or South. What will be the LHA?

Answer 155

180 deg.

Question 156

The azimuth of the celestial body during meridian passage will be: I. North II.South

Answer 156

either I or II

Question 157

If the observer is at 5˚ South and the sun’s declination is 10˚ North, what will be the bearing of the body during meridian passage?

Answer 157

North

Question 158

If the observer is at 5˚ South and the sun’s declination is 10˚ North, what will be the bearing of the body during meridian passage?

Answer 158

000 deg.t

Question 159

If the observer is at 5˚ North and the sun’s declination is 10˚ South, what will be the bearing of the body during meridian passage?

Answer 159

South

Question 160

If the observer is at 5˚ North and the sun’s declination is 10˚ South, what will be the bearing of the body during meridian passage?

Answer 160

180 deg.T

Question 161

If the observer is at 5˚ North and the sun’s declination is 10˚ North, what will be the bearing of the body during meridian passage?

Answer 161

North

Question 162

If the observer is at 10˚ North and the sun’s declination is 5˚ North, what will be the bearing of the body during meridian passage?

Answer 162

South

Question 163

If the observer is at 10˚ North and the sun’s declination is 5˚ South, what will be the bearing of the body during meridian passage?

Answer 163

180 deg.T

Question 164

If the observer is at 5˚ North and the sun’s declination is 10˚ North, what will be the bearing of the body during meridian passage?

Answer 164

000 deg.T

Question 165

If the observer is at 10˚ North and the sun’s declination is 15˚ North, what will be the bearing of the body during meridian passage?

Answer 165

North

Question 166

If the observer is at 10˚ North, and the sun is at summer solstice, what will be the bearing of the body during meridian passage?

Answer 166

North

Question 167

If the observer is at 40˚North, and the sun is at summer solstice, what will be the bearing of the body during meridian passage?

Answer 167

South

Question 168

If the observer is at 10˚ North, and the sun is at summer solstice, what will be the bearing of the body during meridian passage?

Answer 168

000 deg.T

Question 169

If the observer is at 40˚ North, and the sun is at summer solstice, what will be the bearing of the body during meridian passage?

Answer 169

180 deg.T

Question 170

If the observer is at 10˚ South, and the sun is at summer solstice, what will be the bearing of the body during meridian passage?

Answer 170

North

Question 171

If the observer is at 10˚ South, and the sun is at summer solstice, what will be the bearing of the body during meridian passage?

Answer 171

000 deg.T

Question 172

If the observer is at 10˚ South, and the sun is at winter solstice, what will be the bearing of the body during meridian passage?

Answer 172

South

Question 173

If the observer is at 10˚ South, and the sun is at winter solstice, what will be the bearing of the body during meridian passage?

Answer 173

180 deg.T

Question 174

If the observer is at 40˚ South, and the sun is at winter solstice, what will be the bearing of the body during meridian passage?

Answer 174

North

Question 175

If the observer is at 40˚ South, and the sun is at winter solstice, what will be the bearing of the body during meridian passage?

Answer 175

000 deg.T

Question 176

Find the latitude of the observer if the sun’s altitude at upper transit is 75˚ bearing North and the declination is 10 deg North.

Answer 176

5 deg. S

Question 177

Find the latitude of the observer if the sun’s altitude at upper transit is 50˚ bearing South and the declination is 5˚ South.

Answer 177

35 deg. N

Question 178

Find the latitude of the observer if the sun’s altitude at upper transit is 50˚ bearing South and the declination is 10˚ South.

Answer 178

30 deg. N

Question 179

Find the latitude of the observer if the sun’s altitude at lower transit is 10˚ bearing South and the declination is 70˚ South.

Answer 179

30 deg. S

Question 180

At meridian passage, upper transit, Ho of the sun is 39˚19.3’, bearing North. Declination of the sun is 23˚38.2’ South. Find latitude at transit.

Answer 180

74˚18.9’ S

Question 181

At meridian passage, upper transit, Ho of the sun is 48˚11.6’, bearing South. Declination of the sun is 1˚46.3’ North. Find latitude at transit.

Answer 181

43˚34.7’ N

Question 182

At meridian passage, upper transit, Ho of the sun is 76˚46.5’, bearing North. Declination of the sun is 20˚10.5’ North. Find latitude at transit.

Answer 182

9˚57.0’ N

Question 183

The Observed altitude (Ho) of Star Kochab at meridian passage, lower transit is 16˚11.5’. The star’s declination is 74˚16.2’ North. Find latitude.

Answer 183

31˚55.3’ N

Question 184

The Observed altitude (Ho) of Star Deneb at meridian passage, lower transit is 15˚23.5’. The star’s declination is 45˚16.6’ North. Find latitude.

Answer 184

60˚06.9’ N

Question 185

On April 22, in longitude 098˚East, the observed altitude (Ho) of the Sun’s U.L. at meridian passage was 54˚42.2’ bearing North, declination is 11˚42.1’ N. Calculate the observer’s latitude.

Answer 185

23˚35.7’ S

Question 186

On Jan. 16, in longitude 132˚54’W, the observed altitude (Ho) of the Sun’s L.L. at meridian passage was 64˚04.2’ bearing North, declination is 21˚58.5’S. Calculate the observer’s latitude.

Answer 186

47˚54.3’ S

Question 187

The observed meridian altitude (Ho) fo the star Sirius (lower transit) was 14˚03.9’ bearing South. Find the observer’s latitude if the declination is 16˚43’ S

Answer 187

87˚20.9’ S

Question 188

At meridian passage, upper transit, the observer’s latitude was found to be 43˚34.7’ North, Declination is 1˚46.3’ North. Find the Observed Altitude (Ho)

Answer 188

48˚11.6’ S

Question 189

At meridian passage, upper transit, the observer’s latitude was found to be 9˚57’ North, Declination is 20˚10.5’ North. Find the Observed Altitude (Ho)

Answer 189

79˚4.5’ N

Question 190

The Meridian Altitudes of a celestial body are 12˚ and 68˚, North and South respectively from the navigator. Calculate the latitude.

Answer 190

62˚ N

Question 191

The Meridian Altitudes of a celestial body are 12˚ and 68˚, North and South respectively from the navigator. Calculate declination of the celestial body.

Answer 191

40˚ N

Question 192

The Meridian Altitudes of a celestial body are 12˚ and 68˚, North and South respectively from the navigator. Calculate the true altitude of the celestial body when it crosses the prime vertical.

Answer 192

46˚43’ N

Question 193

What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of June 21?

Answer 193

23˚27’ N

Question 194

What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of December 22?

Answer 194

23˚27’ S

Question 195

What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of March 21?

Answer 195

at the equator

Question 196

What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of September 22 or 23?

Answer 196

0 deg. Latitude

Question 197

On June 10 in Longitude 058˚42’E, the sextant meridian altitude (Hs) of the sun’s U.L. was 87˚32.0’ bearing South, I.E. 1.3’ on the arc. DIP correction is 4.8’, Main corr. Is 15.9’. Calculate the latitude of the observer if the sun’s declination from the almanac indicates 23˚17.4’ North.

Answer 197

26˚07.4’ N

Question 198

The observed meridian altitude (Ho) fo the star Sirius (lower transit) was 14˚03.9’ bearing South. Find the observer’s latitude if the declination is 16˚43’ South.

Answer 198

87˚20.9’ S

Question 199

On Jan. 20, at GMT 22h 53m 40s, in longitude 041˚26’W, the observed altitude (Ho) of the star Polaris was 35˚54.9’ . The correction values determined by Polaris tables are Ao = 0˚ 53.2’, A1 = 0.4’ A2 = 0.7’. Calculate the observer’s latitude.

Answer 199

35˚49.2’ N

Question 200

On Sept. 12, at GMT 10h35m 00s LZT in longitude 057˚ 58’ W, the Ho of star Polaris was 35˚50’. The correction values from the Polaris Tables: Ao = 1˚22.1’, A1 = 0.4’, A2 =0.9’ Find the latitude of the observer.

Answer 200

36˚13.4’ N

Question 201

Find the latitude of the observer if the true altitude of Polaris is 34˚17.6’. The correction values from the Polaris Tables: Ao = 0˚58.5’, A1 = 0.6’, A2 = 0.9’

Answer 201

34˚17.6’ N

Question 202

The mean radius of the Earth is 3440 nautical miles, find the radius of the parallel of Latitude of Manila (Lat. 14˚30’ N approximately)

Answer 202

3330.4 nm

Question 203

The Earth is not a true sphere so that the equatorial radius is larger than the polar radius. The difference is _____.

Answer 203

13.5 miles

Question 204

Given equatorial radius of the Earth as 3444 nm, find radius of a parallel of latitude at 70˚N or S

Answer 204

1177.9 nm

Question 205

With an equatorial radius of the Earth of 3444nm find circumference of a parallel of latitude 30˚N

Answer 205

18740.2 nm

Question 206

At what rate per hour is the Royal observatory at Greenwich (Latitude 51˚28.5’ N) being carried around the Earth’s axis?

Answer 206

560.6 knots

Question 207

At what rate per hour is the Latitude 23˚20’ N being carried around the Earth’s axis?

Answer 207

826.4 knots

Question 208

At what rate per hour is latitude 60˚00’ S being carried around the Earth’s axis?

Answer 208

450 nm/hr

Question 209

At what rate per hour is latitude 45 deg. North being carried around the Earth’s axis?

Answer 209

636.4 nm/hr

Question 210

At what rate per hour is latitude 36˚38’ South being carried around the Earth’s axis?

Answer 210

722.22 nm/hr

Question 211

With a given mean radius of the Earth as 3440 nm, calculate the radius of a parallel of latitude at 46˚24’ North.

Answer 211

2372.3 nm

Question 212

Assuming the equatorial radius of the Earth as 3444 nm, find te circumference of the equator?

Answer 212

21639.3 nm

Question 213

The distance between two meridians is 427 nautical miles in Latitude 50˚20’ N. What is the angle at the pole?

Answer 213

11˚08.9’

Question 214

The distance between two meridians is 600 nautical miles in Latitude 45˚20’ N. What is the angle at the pole?

Answer 214

22˚16.9’

Question 215

The distance between two meridians is 248 nautical miles in Latitude 63˚20’ N. What is the angle at the pole?

Answer 215

9˚12.6’

Question 216

The distance between two meridians is 127 nautical miles in Latitude 39˚30’ N. What is the angle at the pole?

Answer 216

2˚44.5’

Question 217

The distance between two meridians is 724 nautical miles in Latitude 20˚50’ N. What is the angle at the pole?

Answer 217

12˚54.6’

Question 218

The distance between two meridians is 600 nautical miles in Latitude 45˚20’ N. Find the Difference of Longitude (Dlo) between the 2 meridians.

Answer 218

22˚16.9’

Question 219

In what latitude will a departure of 300 nm corresponds to a Dlo of 6˚40’?

Answer 219

41˚24.6’ N or S

Question 220

In what latitude will a departure of 250 nm corresponds to a Dlo of 6˚40’?

Answer 220

51˚19.1’ Nor S

Question 221

In what latitude will a departure of 200 nm corresponds to a Dlo of 4˚16’ ?

Answer 221

38˚37.5’ N or S

Question 222

On a certain parallel, the distance between two meridians is 250 nm while the Dlo between the meridians is 12˚30’. What is the latitude?

Answer 222

70˚31.9’ N or S

Question 223

On a certain parallel, the distance between two meridians is 340 nm while the Dlo between the meridians is 18˚30’. What is the latitude?

Answer 223

72˚09.8’ N or S

Question 224

In Latitude 50˚10’ N, the departure between two meridians is 360 nautical miles. What is the Difference of Longitude?

Answer 224

9˚22’

Question 225

In Latitude 45˚20’ N, the departure between two meridians is 430 nautical miles. What is the Difference of Longitude?

Answer 225

10˚11.7’

Question 226

In Latitude 20˚40’ N, the departure between two meridians is 130 nautical miles. What is the Difference of Longitude?

Answer 226

2˚19’

Question 227

In Latitude 38˚20’ N, the departure between two meridians is 530 nautical miles. What is the Difference of Longitude?

Answer 227

11˚15.6’

Question 228

A ship steams on a course of 090˚T from port A in latitude 23˚30’ N; Long. 059˚10’E to Port B in Latitude 23˚30’ N; Longitude 065˚30’E. How far did she steam?

Answer 228

348.5 nm

Question 229

A ship steams on a course of 270˚T from port A in latitude 23˚30’ N; Long. 059˚10’E to Port B in Latitude 23˚30’ N; Longitude 065˚30’E. How far did she steam?

Answer 229

348.5 nm

Question 230

In Latitude 50˚20’N, a vesse steams from Long. 015˚46’W to Long. 031˚18’W. What distance was made good?

Answer 230

594.9 nm

Question 231

On a certain parallel, the distance betweeen two meridians is 150 nm. On the equator the distance between the same two meridians is 235 nautical miles. What is the latitude of the parallel?

Answer 231

50˚20.1’ N or S

Question 232

On a certain parallel, the distance betweeen two meridians is 400 nm. On the equator the distance between the same two meridians is 470 nautical miles. What is the latitude of the parallel?

Answer 232

31˚40.3. N or S

Question 233

On a certain parallel, the distance betweeen two meridians is 250 nm. On the equator the distance between the same two meridians is 330 nautical miles. What is the latitude of the parallel?

Answer 233

40˚44.9’ N or S

Question 234

On a certain parallel, the distance betweeen two meridians is 25 nm. On the equator the distance between the same two meridians is 30 nautical miles. What is the latitude of the parallel?

Answer 234

33˚33’ N or S

Question 235

On a certain parallel, the distance betweeen two meridians is 50 nm. On the equator the distance between the same two meridians is 150 nautical miles. What is the latitude of the parallel?

Answer 235

70˚31.7’ N or S

Question 236

On a certain parallel, the distance betweeen two meridians is 130 nm. On the equator the distance between the same two meridians is 330 nautical miles. What is the latitude of the parallel?

Answer 236

66˚48’ N or S

Question 237

On a certain parallel, the distance betweeen two meridians is 15 nm. On the equator the distance between the same two meridians is 30 nautical miles. What is the latitude of the parallel?

Answer 237

60˚00’ N or S

Question 238

On a certain parallel, the distance betweeen two meridians is 40.8 nm. On the equator the distance between the same two meridians is 81.6 nautical miles. What is the latitude of the parallel?

Answer 238

60˚00’ N or S

Question 239

On a certain parallel, the distance betweeen two meridians is 20 nm. On the equator the distance between the same two meridians is 80 nautical miles. What is the latitude of the parallel?

Answer 239

75˚31.3’ N or S

Question 240

On a certain parallel, the distance betweeen two meridians is 120 nm. On the equator the distance between the same two meridians is 280 nautical miles. What is the latitude of the parallel?

Answer 240

64˚37.4’

Question 241

On a certain parallel, the distance betweeen two meridians is 2350 nm. On the equator the distance between the same two meridians is 4860 nautical miles. What is the latitude of the parallel?

Answer 241

61˚05’ N or S

Question 242

On a certain parallel, the distance betweeen two meridians is 2123 nm. On the equator the distance between the same two meridians is 8130 nautical miles. What is the latitude of the parallel?

Answer 242

74˚51.8’ N or S

Question 243

On a certain parallel, the distance betweeen two meridians is 235 nm. On the equator the distance between the same two meridians is 350 nautical miles. What is the latitude of the parallel?

Answer 243

47˚49.3’ N or s

Question 244

On a certain parallel, the distance betweeen two meridians is 320 nm. On the equator the distance between the same two meridians is 680 nautical miles. What is the latitude of the parallel?

Answer 244

61˚55.6’ N or S

Question 245

On a certain parallel, the distance betweeen two meridians is 240 nm. On the equator the distance between the same two meridians is 670 nautical miles. What is the latitude of the parallel?

Answer 245

69˚00’ N or S

Question 246

A vessel steers a course of 146˚T from Lat. 35˚10’N to Lat. 8˚46’ N. How far did she steam?

Answer 246

1910.7 nm

Question 247

A vessel sails from Lat.21˚45’N; Long.023˚56’ W on course 146˚ T for a distance of 300 nm. Find the Latitude and Longitude of Arrival by mercator Sailing.

Answer 247

Lat.17˚36.3’ N; Long. 026˚53.1’W

Question 248

Find the DLAT and Depature made good if a vessel steams for 1936 nautical miles on course 248˚ T

Answer 248

Dlat 725.2’ S; Dep. 1795.1’

Question 249

Find the DLAT and Depature made good if a vessel steams for 435 nautical miles on course 026˚ T

Answer 249

Dlat 391.0’ N; Dep. 190.7’

Question 250

Find the DLAT and Depature made good if a vessel steams for 341 nautical miles on course 215˚ T

Answer 250

Dlat 279.3’ S; Dep 195.6’

Question 251

A vessel makes a Dlat of 289.4’ N and a departure of 203.2 nautical miles. Find the course and distance.

Answer 251

Course 324˚55.5’; Dist. 353.6’

Question 252

In latitude 50˚20’ N, a vessel steams 270˚T from Long. 015˚ 46’ W to Long. 031˚18’ W. Find the distance made good.

Answer 252

594.9 nm

Question 253

A vessel steams 470 nautical miles along the parallel of “x” North from Long.015˚35’ W to Long. 027˚20’ W. What is the latitude of “x” ?

Answer 253

Lat. 48˚ 11.3’ North

Question 254

From Latitude 39˚00’N; 033˚10’W, a ship steams on course 270˚T at 10 knots for 3 days and 8 hours. Find arrival position.

Answer 254

Lat. 39˚00’ N; Long. 050˚ 19.4’ W

Question 255

Two ports A and B are in the Northern Hemisphere. On the parallel of Port A, the distance between their meridians is 250 nm. On the parallel of Port B it is 350 nm and on the equator it is 400 nm. What are the Latitudes of the ports?

Answer 255

Lat 51˚19.1’ N for Port A Lat 28˚57.3’ N for Port B

Question 256

A ship steams 090˚T for 200 nautical miles in Lat. 49˚10’ N. By how much will her clocks have to be advanced?

Answer 256

20m 23s

Question 257

Your vessel receivesa distress call from a vessel reporting her position as LAT 35˚01’ S; LONG. 018˚51’ W. Your position is LAT 35˚01’ S; LONG.021˚42’ W. Determine what will be your True Course and distance to the vessel in distress by parallel sailing method.

Answer 257

090˚T, 140 nm

Question 258

A vessel in Latitude 55˚12’ N sails on course 270˚T and made a Dlo of 21˚36.6’. If the time taken was 3 days 2 hours, find the vessel’s speed.

Answer 258

10 knots

Question 259

On a certain parallel, a vessel must steam one nautical mile to alter her longitude by 2 minutes. What is the latitude of the parallel?

Answer 259

Lat. 60˚ N or S

Question 260

A ship “A” is on the equator steering 090˚T at 16 knots; while a ship “B” is on a parallel of North latitude, steering 270˚T at 12 knots. When “A” makes a Dlo of 1’, “B” makes a Dlo of 48’. Calculate the latitude of “B”.

Answer 260

Lat 20˚ 22’

Question 261

A ship in Latitude 59˚40’ sailed on a certain course until the D.M.P. was twice the DLat. Calculate the Latitude reached.

Answer 261

Lat. 60˚ 20’ N or S

Question 262

By sailing due East for a distance of 245 nautical miles, a ship alters her longitude by 7˚25’. Find Latitude of the ship.

Answer 262

Lat. 56˚ 36’ N or S

Question 263

Find the distance between initial position at Lat1. 50˚0’ N; 178˚0’ W and Lat2. 50˚00’ N; Long. 179˚ 00’E.

Answer 263

116 nm

Question 264

Your ship departs Yokohama, Japan from position Lat. 35˚27’ N; Long. 139˚39’ E bound for San Francisco, California,USA. At position Lat. 37˚48.5’ N, Long. 122˚24’ W. Determine the course and distance by Mercator sailing only.

Answer 264

088.3˚T; dist. 4738.4 miles

Question 265

Your ship departs Yokohama, Japan from position Lat. 35˚27’ N; Long. 139˚39’ E bound for San Francisco, California,USA. At position Lat. 37˚48.5’ N, Long. 122˚24’ W. Determine the distance by Great Circle sailing.

Answer 265

4473 miles

Question 266

Your ship departs Yokohama, Japan from position Lat. 35˚27’ N; Long. 139˚39’ E bound for San Francisco, California,USA. At position Lat. 37˚48.5’ N, Long. 122˚24’ W. Determine the initial course by Great Circle sailing.

Answer 266

054.3˚T

Question 267

Your ship departs Yokohama, Japan from position Lat. 35˚27’ N; Long. 139˚39’ E bound for San Francisco, California,USA. At position Lat. 37˚48.5’ N, Long. 122˚24’ W. Determine the Latitude of the Vertex (Lv) by Great Circle sailing.

Answer 267

Lv = 48˚35.9’ N

Question 268

Your ship departs Yokohama, Japan from position Lat. 35˚27’ N; Long. 139˚39’ E bound for San Francisco, California,USA. At position Lat. 37˚48.5’ N, Long. 122˚24’ W. Determine the Longitude of the Vertex (Lv) by Great Circle sailing.

Answer 268

Longv = 169˚14’ W

Question 269

Determine the great circle distance and intial course from Lat. 27˚51’ N; Long. 071˚41’ W to Lat. 49˚ 45’ N; Long. 006˚14’ W ?

Answer 269

3214 nm, 046.9˚T

Question 270

Determine the great circle distance and intial course from Lat. 36˚00’ S; Long. 056˚00’ W to Lat. 34˚ 00’ N; Long. 018˚15’ E ?

Answer 270

3557 nm; 112˚T

Question 271

Determine the great circle distance and intial course from Lat. 24˚52’ N; Long. 078˚27’ W to Lat. 47˚ 19’ N; Long. 006˚ 42’ W ?

Answer 271

3593 nm; 048.1˚T

Question 272

The great circle distance from Lat. 35˚57.2’ N, Long. 005˚45.7’ W to Lat. 24˚25.3’ N; Long 083˚02.6’ W is 3966.5 nautical miles and the initial course is 283.7˚T. The latitude of the vertex is 38˚09.4’ N. What is the longitude of the vertex?

Answer 272

028˚ 18.5’ W

Question 273

The great circle distance from Lat. 08˚50’ N, Long. 080˚21’ W to Lat. 12˚36’ N; Long 128˚16’ E is 8664 nautical miles and the initial course is 306.6˚T. The latitude of the vertex is 37˚39.6’ N. What is the longitude of the vertex?

Answer 273

157˚44’ W

Question 274

You are on a great circle track departing from LAT. 25˚50’ N; LONG. 077˚00’ W and your initial course is 061.7˚T. The position of the vertex is LAT 37˚35.6’ N; LONG. 025˚57.8’ W. What is the distance along the great circle track between the point of dep

Answer 274

2664.9 nm

Question 275

The great circle distance from Lat. 35˚08’ S, Long. 019˚26’ E to Lat. 33˚16’ S; Long 115˚36’ E is 4559 nautical miles and the initial course is 121˚T. Determine the latitude of the vertex?

Answer 275

45˚30’ S

Question 276

The latitude and longitude of the vertex along your great circle course is 38˚15’S, 168˚19’W. Your vessel is on course 102˚T. Which of the following is your course when crossing the equator?

Answer 276

051.8˚T

Question 277

The latitude and longitude of the vertex along your great circle course is 38˚15’S, 168˚19’E. Your vessel is on course 060˚T. Which of the following is your longitude when crossing the equator?

Answer 277

101˚21’ W

Question 278

The latitude and longitude of the vertex along your great circle course is 43˚32’S, 039˚18’ E. Your vessel is on course 246˚T. Which of the following is your course when crossing the equator?

Answer 278

313.5˚ T

Question 279

A great circle crosses the equator at 134˚ E. It will also cross the equator at what other longitude?

Answer 279

046˚ W

Question 280

A great circle crosses the equator at 114˚ E. It will also cross the equator at what other longitude?

Answer 280

066˚ W

Question 281

A great circle crosses the equator at 114˚ W. It will also cross the equator at what other longitude?

Answer 281

066˚ E

Question 282

A great circle crosses the equator at 086˚ E. It will also cross the equator at what other longitude?

Answer 282

094˚ W

Question 283

A great circle crosses the equator at 157˚ W. It will also cross the equator at what other longitude?

Answer 283

023˚ E

Question 284

A great circle crosses the equator at 049˚ W. It will also cross the equator at what other longitude?

Answer 284

131˚ E

Question 285

A great circle crosses the equator at 102˚ E. It will also cross the equator at what other longitude?

Answer 285

078˚ W

Question 286

A great circle crosses the equator at 012˚ 35’ E. It will also cross the equator at what other longitude?

Answer 286

167˚ 25’ W

Question 287

A great circle crosses the equator at 032˚ 35’ W. It will also cross the equator at what other longitude?

Answer 287

147˚25’ E

Question 288

A great circle crosses the equator at 078˚ 45’ E. It will also cross the equator at what other longitude?

Answer 288

101˚15’ W

Question 289

A great circle crosses the equator at 120˚ E. It will also cross the equator at what other longitude?

Answer 289

060˚ W

Question 290

A great circle crosses the equator at 120˚ W. It will also cross the equator at what other longitude?

Answer 290

060˚ E

Question 291

The longitude of the upper vertex of a great circle track is 169˚ E. What is the longitude of the lower vertex?

Answer 291

011˚ W

Question 292

The longitude of the upper vertex of a great circle track is 011˚ W. What is the longitude of the lower vertex?

Answer 292

169˚ E

Question 293

The longitude of the upper vertex of a great circle track is 134˚ E. What is the longitude of the lower vertex?

Answer 293

046˚ W

Question 294

The latitude of the upper vertex of a great circle is 36˚ N. What is the latitude of the lower vertex?

Answer 294

36˚ S

Question 295

The latitude of the upper vertex of a great circle is 63˚ N. What is the latitude of the lower vertex?

Answer 295

63˚S

Question 296

The latitude of the upper vertex of a great circle is 27˚ N. What is the latitude of the lower vertex?

Answer 296

27˚S

Question 297

The latitude of the upper vertex of a great circle is 54˚ S. What is the latitude of the lower vertex?

Answer 297

54˚N

Question 298

The latitude of the upper vertex of a great circle is 46˚ S. What is the latitude of the lower vertex?

Answer 298

46˚N

Question 299

The latitude of the upper vertex of a great circle is 30˚ S. What is the latitude of the lower vertex?

Answer 299

30˚N

Question 300

What is the difference of longitude between the intersection of the great circle and the equator to the lower vertex?

Answer 300

90 deg.

Question 301

What is the difference of longitude between the intersection of the great circle and the equator to the upper vertex?

Answer 301

90 deg.

Question 302

The vertex of a great circle track in Long. 109˚ E. An eastbound vessel will cross the equator in what longitude?

Answer 302

161˚ W

Question 303

The vertex of a great circle track is Long. 121˚ E. An eastbound vessel will cross the equator in what longitude?

Answer 303

149˚ W

Question 304

The vertex of a great circle track is Long. 134˚ E. An eastbound vessel will cross the equator in what longitude?

Answer 304

136˚W

Question 305

The vertex of a great circle track is Long. 029˚ E. An eastbound vessel will cross the equator in what longitude?

Answer 305

119˚ E

Question 306

The vertex of a great circle track is Long. 079˚ E. An eastbound vessel will cross the equator in what longitude?

Answer 306

169˚ E

Question 307

The vertex of a great circle track is Long. 029˚ W. An eastbound vessel will cross the equator in what longitude?

Answer 307

061˚ E

Question 308

The vertex of a great circle track is Long. 029˚ W. A westbound vessel will cross the equator in what longitude?

Answer 308

119˚ W

Question 309

The vertex of a great circle track is Long. 134˚ E. A westbound vessel will cross the equator in what longitude?

Answer 309

044˚E

Question 310

The vertex of a great circle track is Long. 109˚ E. A westbound vessel will cross the equator in what longitude?

Answer 310

019˚ E

Question 311

The vertex of a great circle track is Long. 121˚ E. A westbound vessel will cross the equator in what longitude?

Answer 311

031˚ E

Question 312

The vertex of great circle track is Long. 121˚ W. An eastbound vessel will cross the equator in what longitude?

Answer 312

031˚ W

Question 313

The upper vertex of great circle track is at Long. 158˚ W. An eastbound vessel will cross the equator in what longitude?

Answer 313

068˚ W

Question 314

The upper vertex of great circle track is Long. 144˚ W. A westbound vessel will cross the equator in what longitude?

Answer 314

126˚ E

Question 315

The vertex of great circle track is Long. 168˚ W. An eastbound vessel will cross the equator in what longitude?

Answer 315

078˚ W

Question 316

The difference of longitude between the upper vertex and the lower vertex of a great circle is _____.

Answer 316

180 deg.

Question 317

A ship following a great circle track crosses the equator at long. 135˚ 00’ E on course 051.8˚T. If she continues along this great circle track, find the latitude and longitude of the upper vertex.

Answer 317

Lat. 38˚12’ N; Long. 135˚ 00’ W

Question 318

Determine the latitude and longitude of the vertex along your great circle track when going from Lat. 35˚ 17.6’ N; Long.144˚ 23’ E to Lat.47˚ 36’ N; Long. 124˚ 22’ W.

Answer 318

Lat. 52˚47.8’ N; Long. 158˚ 07.3’ W

Question 319

Determine the great circle distance and initial course from Lat 08˚ 36’ N, Long. 126˚ 17’ E to Lat. 02˚12’ S, Long. 081˚ 53’ W.

Answer 319

9076 miles, 079˚T

Question 320

The great circle distance from Lat. 38˚17’ N; Long. 123˚ 16’ W to Lat. 35˚ 01’ N; Long. 142˚ 21’ E is 4330 nautical miles and the initial course is 300.9˚ T Determine the latitude and longitude of the vertex.

Answer 320

Lat. 47˚39.5’ N; Long. 167˚ 18.5’ W

Question 321

You receive a distress call from a vessel reporting her position as Lat. 30˚21’ N; Long. 088˚34’ W. Your position is at Lat. 24˚30’ N; Long. 083˚00’ W. Determine the true course and distance to the distress scene by Mercator Sailing.

Answer 321

320˚ T; dist. 460 nm

Question 322

By Mercator sailing, determine the course and distance when sailing from Lat 43˚08’ N; Long. 005˚56’ E to Lat. 39˚ 29’ N.; Long. 000˚ 24’ W.

Answer 322

233˚T, 361 miles

Question 323

By Mercator sailing, determine the course and distance when sailing from Lat 00˚00’ ; Long. 000˚03’ W to Lat. 51˚ 12’ N.; Long. 016˚ 14’ E.

Answer 323

015˚T, 3185 nm

Question 324

By Mercator sailing, determine the course and distance when sailing from Lat 15˚12’ S; Long. 002˚12’ E to Lat. 28˚ 49’ S.; Long. 017˚ 14’ E.

Answer 324

134˚T, 1171 miles

Question 325

By Mercator sailing, determine the course and distance when sailing from Lat 08˚04’ S; Long. 034˚53’ W to Lat. 14˚ 45’ N.; Long. 017˚ 33’ W.

Answer 325

037˚ T, 1718 miles

Question 326

A vessel at Lat. 38˚ 03’ S, Long. 049˚ 38’ W heads for a destination at Lat, 41˚ 26’ S, Long. 038˚ 32’ W. Determine the true course and distance by Mercator Sailing.

Answer 326

111.5˚

Question 327

A vessel at Lat. 21˚ 18.5’ N, Long. 157˚ 52.2’ W heads for a destination at Lat, 08˚ 53’ N, Long. 079˚ 31’ W. Determine the true course and distance by Mercator Sailing.

Answer 327

099˚ T, 4617.5 miles

Question 328

A vessel steams 1082 miles on course 047˚ T from lat. 37˚18’ N; Long. 024˚ 40’ W. What is the latitude and longitude of the point of arrival by Mercator Sailing.

Answer 328

Lat. 49˚36’ N; Long. 006˚ 28’ W

Question 329

A vessel at Lat. 28˚ 00’ N, Long. 116˚ 00’ W heads for a destination at Lat, 34˚ 00’ N, Long. 123˚ 40’ W. Determine the true course and distance by Middle Latitude Sailing.

Answer 329

312˚ T, 533 miles

Question 330

A vessel at Lat. 20˚ 10’ N, Long. 122˚ 00’ E heads for a destination at Lat, 26˚ 18’ N, Long. 128˚ 20’ E. Determine the true course and distance by Middle Latitude Sailing.

Answer 330

043.5˚ T, 507.3 miles

Question 331

A vessel at Lat. 49˚ 45’ N, Long. 006˚ 35’ W heads for a destination at Lat, 25˚ 50’ N, Long. 077˚ 00’ W. Determine the true course and distance by Mercator or middle latitude Sailing.

Answer 331

246˚ T, 3597 miles

Question 332

A ship sailed on course 326˚T from Latitude 20˚ 58.8’ S, Long. 012˚ 37.6’ E. For a distance of 311 nautical miles. Find the arrival longitude by mercator sailing.

Answer 332

Lat. 16˚41’ N; Long. 009˚ 34.9’ E

Question 333

A ship sails from Lat. 30˚20’ N and steams going south (180) for a distance of 72 miles. What is her arrival latitude?

Answer 333

29˚ 08’ N

Question 334

A ship sails from Lat. 20˚30’ N and steams going south (180) for a distance of 72 miles. What is her arrival latitude?

Answer 334

19˚18’ N

Question 335

A ship sails from Lat. 03˚20’ N and steams going south (180) for a distance of 182 miles. What is her arrival latitude?

Answer 335

00˚18’ N

Question 336

A ship sails from Lat. 30˚20’ S and steams going south (180) for a distance of 180 miles. What is her arrival latitude?

Answer 336

33˚20’ S

Question 337

A ship sails from Lat. 46˚22’ S and steams going south (180) for a distance of 372 miles. What is her arrival latitude?

Answer 337

52˚34’ S

Question 338

A ship sails from Lat. 52˚34’ S and steams going north (000) for a distance of 372 miles. What is her arrival latitude?

Answer 338

46˚22’ S

Question 339

A ship sails from Lat. 52˚34’’ S and steams going south (180) for a distance of 372 miles. What is her arrival latitude?

Answer 339

58˚46’ S

Question 340

A ship sails from Lat. 34˚54’ N and steams going south (180) for a distance of 372 miles. What is her arrival latitude?

Answer 340

28˚42’ N

Question 341

A ship sails from Lat. 34˚54’ N and steams going north (000) for a distance of 372 miles. What is her arrival latitude?

Answer 341

41˚06’ N

Question 342

A ship sails from Lat. 46˚22’ N and steams going south (180) for a distance of 372 miles. What is her arrival latitude?

Answer 342

40˚10’ N

Question 343

At 1210 LZT, on 01 December 2007, you depart Seattle at Lat. 47˚ 36’ N; Long. 122˚ 22’ W (ZD+8). You are bound for Guam, Lat 13˚ 27’ N; Long. 144˚ 37’ E and you estimate your speed of advance at 20 knots. The distance is 4,948 miles. What is your estimated zone time of arrival in Guam?

Answer 343

1334, 12 December

Question 344

At 0915 LZT, on 07 November 2007, you depart Seattle at Lat. 47˚ 36’ N; Long. 122˚ 22’ W (ZD+8). You are bound for Kobe, Lat 34˚ 40’ N; Long. 135˚ 12’ E and you estimate your speed of advance at 18.5 knots. The distance is 4,527 miles. What is your estimated zone time of arrival at Kobe?

Answer 344

0657, 18 November

Question 345

At 1820 LZT, on 21 March 2007, you depart San Francisco at Lat. 37˚ 48.5’ N; Long. 122˚ 24’ W (ZD+8). You are bound for Melbourne, Lat 37˚ 49.2’ S; Long. 144˚ 56’ E and you estimate your speed of advance at 21 knots. The distance is 6,970 miles. What is your estimated zone time of arrival at Melbourne?

Answer 345

0814, 05 April

Question 346

At 0915 LZT, on 26 July 2007, you depart Yokohama at Lat. 37˚ 27’ N; Long. 139˚ 39’ E (ZD-9). You are bound for Seattle, Lat 47˚ 36’ N; Long. 122˚ 22’ W and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated zone time of arrival at Seattle?

Answer 346

0728, 07 August

Question 347

At 0600 LZT, on 22 October 2007, you depart Manila at Lat. 14˚ 35’ N; Long. 120˚ 58’ E (ZD-8). You are bound for Los Angeles, Lat 33˚ 46’ N; Long. 118˚ 11’ W and you estimate your speed of advance at 20.2 knots. The distance is 6385.9 miles. What is your estimated zone time of arrival at Los angeles?

Answer 347

1808, 03 November

Question 348

At 0530 LZT, on 20 December 2007, you depart Capetown, South Africa (ZD-1). You are bound for New York (ZD +5), and you estimate your speed of advance at 25 knots. The distance is 6762 miles. What is your estimated zone time of arrival at New York?

Answer 348

0600, 31 December

Question 349

Your ship will sail from a position in LAT 08˚51’N; LONG. 081˚31’ W to position at LAT 33˚ 51.5’ S; LONG 151˚13’ E. The distance by great circle is 7635 miles, and you estimate an average speed of 15 knots. Find your estimated zone time of arrival if you depart at 1510 ZT on July 23?

Answer 349

1110, 14 August

Question 350

You are on a voyage from New York, USA, to San Francisco, USA. The distance from pilot to pilot is 5132 miles. The speed of advance is 13.5 knots. You estimate 32 hours for bunkering at Colon, and 14 hours for the Panama Canal Transit. If you take departure at 0600 hours (ZD+4) on 16 May, what is your ETA (ZD+7) at San Francisco?

Answer 350

2109, 02 June

Question 351

You are on a voyage from Limoy, Costa Rica, to Los angeles, USA. The distance from pilot to pilot is 3150 miles. The speed of advance is 14 knots. You estimate 24 hours for bunkering at Colon, and 12 hours for the Panama Canal Transit. If you take departure at 1836 hours (ZD+6) on 28 January, find your ETA (ZD+8) at Los angeles?

Answer 351

1336, 08 February

Question 352

You are on a voyage from Baltimore,Mainland USA, to Seattle, Washington, USA. The distance from pilot to pilot is 5960 miles. The speed of advance is 16 knots. You estimate 16 hours for bunkering at Colon, and 12 hours for the Panama Canal Transit. If you take departure at 0824 hours (ZD+5), 18 November, find ETA (ZD+8) at Seattle?

Answer 352

2154, 04 December

Question 353

You are on a voyage from Halifax, Nova Scotia, to Galveston, TX. The distance from pilot to pilot is 2138 miles. The speed of advance is 12.5 knots. You estimate 18 hours for bunkering enroute at Port Everglades, FL. If you sail at 0648 hours (ZD+4), on, on June 12, what is your ETA (ZD+5) at Galveston?

Answer 353

0250, 20 June

Question 354

You are on a voyage from Valdez, Alaska, to the Panama Canal. The distance from pilot to pilot is 4950 miles. The speed of advance is 15 knots. You estimate a layover at San Francisco, CA of 36 hours If you take departure at 0800 hours (ZD+10), on 29 October, what is your ETA (ZD+5) at Panama Canal?

Answer 354

1900, 13 November

Question 355

You are on a voyage from Belem. Brazil, to Mobile, Alabama. The distance from pilot to pilot is 3150 miles. The speed of advance is 14 knots. You estimate a layover at San Juan, Puerto Rico of 17.5 hours If you take departure at 2200 hours (ZD+3h 30m), on 26 February 2007, what is your ETA (ZD+6) at Mobile?

Answer 355

2200, 08 March

Question 356

At 0915 zone time, on 06 March, you depart Sydney, Australia in LAT. 33˚ 51.5’ S; LONG. 151˚ 13.0’ E (ZD-10). You are bound for Kodiak, LAT. 57˚ 47’ N; LONG. 152˚ 25.0’ W. If you estimate your speed of advance to be 21 knots and the distance is 6,222 miles. What is your ETA at Kodiak?

Answer 356

2132, 17 March

Question 357

You are on a voyage from San Diego, CA, to New York, USA. The distance from pilot to pilot is 4860 miles. The speed of advance is 15 knots. You estimate 18 hours for bunkering at Colon, and 14 hours for the Panama Canal Transit. If you take departure at 0836 hours (ZD+7), 4 July, what is your ETA (ZD+4) at New York?

Answer 357

0736, 19 July

Question 358

At 0800 zone time, on 15 April, your vessel is heading west in position LAT.15˚ 10’ N; LONG. 165˚15’ W at a speed of 22 knots. The distance to your destination at LAT. 15˚ 10’ N; LONG. 135˚ 15’ E is 3600 nautical miles. What is your ETA ?

Answer 358

2339, 22 April

Question 359

On Novemeber 21 at 2100 zone time,you depart Pt. A (ZD+5) enroute to Pt. B (ZD+1). The total distance is 3519 nautical miles. What will be the speed to use in order to arrive at Pt. B on December 3 at 1830 zone time?

Answer 359

12.5 knots

Question 360

On September 13 at 1936 hours, your ship was in Lat. 21˚32’ N; Long. 070˚ 18’ W. On Sept. 14 at 1854 hours, your ship was in Lat. 018˚ 15’ N; Long. 065˚ 24’ W. What is your speed if your total distance run is 341 nautical miles?

Answer 360

15.3 knots

Question 361

You are departing San Francisco, California (ZD+8) on Oct. 10 at 1200 LZT bound for Yokohama, japan (ZD+9) with a total distance of 4536 miles. What will be your approximate speed if you plan to arrive Yokohama on Oct. 19 at about 1900 LZT?

Answer 361

22.0 knots

Question 362

The GMT is 0445 hours and your zone description is +1, your local zone time is _____.

Answer 362

345 hours

Question 363

You are at longitude 124˚00’ E and your local mean time is 0520H on the 5th of the month. What is the mean time at Greenwich?

Answer 363

2104H on the 4th

Question 364

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 099˚ 15’E. What will be the LZT of sunrise?

Answer 364

0615H

Question 365

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 099˚ 15’W. What will be the LZT of sunrise?

Answer 365

0529H

Question 366

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 090˚ 00’E. What will be the LZT of sunrise?

Answer 366

0552H

Question 367

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 099˚ 15’E. What will be the GMT of sunrise?

Answer 367

2315H

Question 368

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 099˚ 15’W. What will be the GMT of sunrise?

Answer 368

1229H

Question 369

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 120˚ 00’E. What will be the LZT of sunrise?

Answer 369

0552H

Question 370

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 124˚ 00’ E. What will be the LZT of sunrise?

Answer 370

0536H

Question 371

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 116˚ 00’ E. What will be the LZT of sunrise?

Answer 371

0608H

Question 372

The LMT of sunrise as tabulated in the Nautical Almanac indicates 06h 00 min. You are at Longitude 116˚ 00’ E. What will be the LZT of sunrise?

Answer 372

0616H

Question 373

The LMT of sunrise as tabulated in the Nautical Almanac indicates 06h 00 min. You are at Longitude 124˚ 00’ E. What will be the LZT of sunrise?

Answer 373

0544H

Question 374

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 120˚ 00’W. What will be the LZT of sunrise?

Answer 374

0552H

Question 375

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 116˚ 00’W. What will be the LZT of sunrise?

Answer 375

0536H

Question 376

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 124˚ 00’W. What will be the LZT of sunrise?

Answer 376

0608H

Question 377

The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 075˚ 00’W. What will be the LZT of sunrise?

Answer 377

0552H

Question 378

The LMT of sunrise is 04h 30min. At LAT. 48˚55’ N. LONG. 078˚ 18’ W. Find the GMT of sunrise.

Answer 378

9h 43m 12s

Question 379

The equation of time is12m 00s and the mean sun is ahead of the apparent sun. If you are in the central meridian of your time zone, at what zone time will the apparent sun cross the meridian?

Answer 379

1212H

Question 380

The equation of time is12m 00s and the apparent sun is ahead of the mean sun. If you are in the central meridian of your time zone, at what zone time will the apparent sun cross the meridian?

Answer 380

1148H

Question 381

The equation of time is16m 00s and the apparent sun is ahead of the mean sun. If you are in the central meridian of your time zone, at what zone time will the apparent sun cross the meridian?

Answer 381

1144H

Question 382

The equation of time is16m 00s and the mean sun is ahead of the apparent sun. If you are in the central meridian of your time zone, at what zone time will the apparent sun cross the meridian?

Answer 382

1216H

Question 383

The LMT of meridian passage taken from the nautical almanac indicates 1210H. You are at longitude 070˚ 30’ E. What time would you use to enter in the nautical almanac to determine the declination of the sun at local apparent noon (LAN)?

Answer 383

0728H

Question 384

What is the geographical latitude of a body whose declination is 23˚27’ N?

Answer 384

23˚ 27’N

Question 385

What is the geographical latitude of star “Deneb” whose declination is 45˚16’ N?

Answer 385

45˚ 16’ N

Question 386

What is the geographical latitude of star “Rigel” whose declination is 08˚ 12’ S?

Answer 386

08˚ 12’ S

Question 387

What is the geographical latitude of a body whose declination is 66˚33’ S?

Answer 387

66˚ 33’S

Question 388

What is the geographical longitude of a body whose GHA is 127˚ 33’ ?

Answer 388

127˚ 33’ W

Question 389

What is the geographical longitude of a body whose GHA is 149˚30’ ?

Answer 389

149˚ 30’ W

Question 390

What is the geographical longitude of a body whose GHA is 232˚27’ ?

Answer 390

127’ 33’ E

Question 391

What is the geographical longitude of a body whose GHA is 210˚ 30’ ?

Answer 391

149˚ 30’ E

Question 392

What is the geographical longitude of a body whose GHA is 279˚30’ ?

Answer 392

080˚ 30’ E

Question 393

The GP of a celestial body is Lat. 20˚ 36’ S and Long. 074˚ 10’ E. Find its GHA and declination on the celestial sphere.

Answer 393

GHA = 285˚ 50’ Dec. = 20˚ 36’ S

Question 394

The GP of a celestial body is Lat. 15˚ 40’ S and Long. 074˚ 10’ W. Find its GHA and declination on the celestial sphere.

Answer 394

GHA = 074˚ 10’ Dec. = 15˚ 40’ S

Question 395

The GP of a celestial body is Lat. 45˚ 00’ N and Long. 090˚ 00’ E. Find its GHA and declination on the celestial sphere.

Answer 395

GHA = 270˚ 00’ Dec. = 45˚’00’ N

Question 396

The GP of a celestial body is Lat. 23˚ 27’ N and Long. 114˚ 20’ W. Find its GHA and declination on the celestial sphere.

Answer 396

GHA = 114˚ 20’ Dec. = 23˚’27’ N

Question 397

A vessel heading magnetic north and its magnetic compass indicates a heading of 356 deg. What action should be done to remove this error during compass adjustment?

Answer 397

If the red ends of the magnets are to starboard, and the athwartship tray is at the top, you should add some more magnets

Question 398

A vessel is heading magnetic east and its magnetic compass indicates a heading of 076 deg. What action should be taken to remove this error during compass adjustment?

Answer 398

If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should add some magnets

Question 399

A vessel is heading magnetic east and its magnetic compass indicates a heading of 086 deg. What action should be taken to remove this error during compass adjustment?

Answer 399

If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should add some magnets

Question 400

A vessel is heading magnetic east and its magnetic compass indicates a heading of 086 deg. What action should be taken to remove this error during compass adjustment?

Answer 400

If the red ends of the magnets are aft, you should lower the fore-and-aft tray

Question 401

A vessel is heading magnetic east and its magnetic compass indicates a heading of 093 deg. What action should be taken to remove this error during compass adjustment?

Answer 401

If the red ends of the magnets are forward, and the fore-and-aft tray is at the bottom, you should remove some magnets

Question 402

A vessel is heading magnetic east and its magnetic compass reads a heading of 093 deg. What action should be taken to remove this error during compass adjustment?

Answer 402

If the red ends of the magnets are aft, you should raise the fore and aft tray.

Question 403

A vessel is heading magnetic east and its magnetic compasss indicates a heading of 086 deg. What actio should be taken to remove this error during compass adjustment?

Answer 403

If the blue ends of the magnets are aft, and the fore and aft tray is at the top, you should add some magnets

Question 404

A vessel is heading magnetic east and its magnetic compasss indicates a heading of 093 deg. What action should be taken to remove this error during compass adjustment?

Answer 404

If the blue ends of the magnets are forward you should raise the fore-andf-aft tray

Question 405

A vessel is heading magnetic north and its magnetic compass indicates a heading of 003 deg. What action should be done to remove this error during compass adjustment?

Answer 405

Raise or lower the athwartship magnets

Question 406

A vessel is heading magnetic north and its magnetic compass indicates a heading of 003 deg. What action should be done to remove this error during compass adjustment?

Answer 406

If the red ends are to starboard, the athwarthship magnets should be lowered

Question 407

A vessel is heading magnetic north and its magnetic compass indicates a heading of 356 deg. What action should be done to remove this error during compass adjustment?

Answer 407

If the red ends of the magnets are to port, you should lower the athwartship tray tray

Question 408

A vessel is heading magnetic north and its magnetic compass is indicating a heading of 356 deg. What action should be taken to remove this error during compass adjustment?

Answer 408

If the blue ends of the magnets are to starboard, and the athwartship tray is at the bottom, you should remove some magnets

Question 409

A vessel is heading magnetic north and its magnetic compass is indicating is heading of 003 deg. What action should be taken to remove this error during compass adjustment?

Answer 409

If the red ends are to starboard, and the athwartship tray is at the bottom, you should remove some magnets.

Question 410

A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312 deg. What action should be done to remove this error during compass adjustment?

Answer 410

Any of these

Question 411

A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312 deg. What action should be taken to remove this error during compass adjustment?

Answer 411

If the quadrantal spheres are all the way out, replace them with smaller spheres

Question 412

A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317 deg. What action should be taken to remove this error during compass adjustment?

Answer 412

If the quadrantal spheres are in as far as possible, replace them with larger spheres

Question 413

A vessel is heading magnetic northwest and its magnetic compass reads a heading of 317 deg. What action should be taken to remove this error dutring compass adjustment?

Answer 413

Move the quadrantal spheres in