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Charting & Plotting Flashcards

1
Q

Block Island Sound Chart #13205TR

Determine the course per standard magnetic compass from the entrance to Quonochontaug Pond to the entrance to Great Salt Pond on Block Island.

A. 129.5°psc
B. 134.0°psc
C. 157.5°psc
D. 160.5°psc

A

D. 160.5°psc

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2
Q

A number placed inside a bracket on the chart indicates that ________________

A. it is a Special Anchorage Area
B. anchoring is to be avoided
C. it has been cleared by a wire drag to the depth indicated by the number in the bracket
D. the location is protected by riprap

A

C. it has been cleared by a wire drag to the depth indicated by the number in the bracket

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3
Q

Block Island Sound Chart #13205TR

Great Salt Pond on Block Island is __________.

A. entered through a dredged cut
B. not accessible in easterly gales
C. available to vessels up to a maximum draft of 8 feet
D. not affected by the tide

A

A. entered through a dredged cut

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4
Q

Block Island Sound Chart #13205TR

What type of bottom can be found around the approaches to Point Judith Harbor of Refuge? __________.

A. Sandy bottom with shells
B. Irregular with rocky bottom and boulders
C. A mixture or mud and clay
D. Generally clear bottom with no obstructions

A

B. Irregular with rocky bottom and boulders

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5
Q

Block Island Sound Chart #13205TR

Your position is LAT 41°15.2’N, LONG 71°50.1’W at 1347. You are turning for 6.9 knots. What is your ETA at Shagwong Reef Buoy “7SR”?

A. 1505
B. 1515
C. 1521
D. 1527

A

A. 1505

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6
Q

Block Island Sound Chart #13205TR

At 1016 your GPS position is LAT 41°07.6’N, LONG 71°38.5’W. At 1116 your position is LAT 41°01.4’N, LONG 71°29.4’W. What was the course made good between the two positions?

A. 132°T
B. 135°T
C. 140°T
D. 143°T

A

A. 132°T

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7
Q

Block Island Sound Chart #13205TR

When approaching Block Island Sound from Long Island Sound, you will enter waters governed by the International Rules of the Road when you __________.

A. pass through The Race
B. cross the territorial sea boundary
C. exit Block Island Sound to the east or south
D. None of the above, as Long Island Sound is governed by the International Rules of the Road

A

A. pass through The Race

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8
Q

Block Island Sound Chart #13205TR - Variation: 15°W

You are on a course when you sight Block Island Southeast Point Light in line with the Block Island Aero Beacon dead ahead bearing 322° per standard magnetic compass. What is the compass error?

A. 2° W
B. 19° W
C. 13° W
D. 13° E

A

C. 13° W

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9
Q

Block Island Sound Chart #13205TR

The coastline between Point Judith and Watch Hill is __________.

A. marked by waterfalls from the highland ponds
B. low and marshy
C. sandy and broken by rocky points
D. heavily forested

A

C. sandy and broken by rocky points

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10
Q

Block Island Sound Chart #13205TR

A vessel anchoring in the middle of Cherry Harbor, 1 mile off Gardiner’s Island, will find what type of bottom?

A. Rocky
B. Shells
C. Mud
D. SiltC. Mud
A

C. Mud

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11
Q

Block Island Sound Chart #13205TR

What is the true course to steer between the entrance to Lake Montauk and Watch Hill Point Light (approx. 41˚18.2N, 71˚51.5’W), if you are turning for 12 knots, and allow for a current of 085˚ at 2 knots?

A. 006°
B. 027°
C. 029°
D. 033°
A

A. 006°

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12
Q

Block Island Sound Chart #13205TR - Variation: 15°W

What is the course to steer per standard magnetic compass between the entrance to Lake Montauk to arrive at a position between buoy’s 1 and 2 at the entrance to New London Harbor. Your wheels are turning for 9 knots, allow for a current of 075° at 1.2 knots?

A. 326°
B. 339.5°
C. 146°
D. 210°
A

B. 339.5°

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13
Q

Block Island Sound Chart #13205TR - Variation: 15°W - (Deviation is 0° on all hand bearing compass problems)

You are on course when you take the following bearings per hand bearing compass: Little Gull Island Light 283˚, Race Rock Light 311˚, Latimer Reef Light 027˚. What is your position?

A. LAT 41˚12.2’N, LONG 71˚57.3’W
B. LAT 41˚12.3’N, LONG 71˚57.4’W
C. LAT 41˚12.4’N, LONG 71˚57.0’W
D. LAT 41˚12.7’N, LONG 71˚57.6’W
A

D. LAT 41˚12.7’N, LONG 71˚57.6’W

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14
Q

Block Island Sound Chart #13205TR - Variation: 15°W

You are on a course of 037° per standard magnetic compass when you sight the light at the entrance to Great Salt Pond in line with Block Island North Light. What is your deviation by observation?

A. 3° W
B. 3° E
C. 18° W
D. 18° E
A

B. 3° E

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15
Q

Block Island Sound Chart #13205TR

You are proceeding from a point 4 miles due east of Montauk Point in route to Long Island Sound via The Race.You should expect the soundings to __________.

A. remain fairly constant
B. increase rapidly at first then remain constant until through the Race
C. start increasing when north of Montauk Point
D. be inaccurate due to sound absorption by the mud bottom
A

C. start increasing when north of Montauk Point

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16
Q

Block Island Sound Chart #13205TR

Your position is LAT 41°15.2’N, LONG 71°50.1’W at 1347.You are turning for 6.9 knots.What is your ETA at Shagwong Reef Buoy “7SR”?

A. 1505
B. 1515
C. 1521
D. 1527
A

A. 1505

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17
Q

Block Island Sound Chart #13205TR - Variation: 15°W

What is the course to steer per standard magnetic compass (psc) between Montauk Point Lighted Whistle Buoy “MP” and Lat 41˚ 12.4’N, LON 71˚36.1’W, if your making turns for 9 knots and you allow for a current of 152˚ at 2 knots?

A. 036.5°
B. 042.5°
C. 204.5°
D. 195.5°
A

A. 036.5°

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18
Q

Block Island Sound Chart #13205TR - Variation: 15°W

You are passing Cerberus Shoal with buoy #9 close aboard. Your engine speed is 10 knots. What course must you steer per standard magnetic compass to arrive at the entrance to Great Salt Pond, if you allow for a current of 300° at 1.3 knots?

A. 088°
B. 101°
C. 268°
D. 281°
A

B. 101°

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19
Q

With respect to the sounding on a nautical chart in North America, the tidal datum used is ________

A. mean low water
B. mean lower low water
C. mean high water
D. mean higher high water
A

B. mean lower low water

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20
Q

Block Island Sound Chart #13205TR

Great Salt Pond on Block Island is __________.

A. entered through a dredged cut
B. not accessible in easterly gales
C. available to vessels up to a maximum draft of 8 feet
D. not affected by the tide
A

A. entered through a dredged cut

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21
Q

Block Island Sound Chart #13205TR - Variation: 15°W

You are on a course when you sight Block Island North Light in line with the Block Island Aero Beacon bearing 193° per standard magnetic compass. What is the deviation by observation?

A. 4° E
B. 5° W
C. 6° E
D. 6° W
A

A. 4° E

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22
Q

Block Island Sound Chart #13205TR - Variation: 15°W - (Deviation is 0° on all hand bearing compass problems)

You are on course 053° per standard magnetic compass when you take the following bearings per hand bearing compass: Little Gull Island Light 275° Race Rock Light 292° Latimer Reef Light 007°. What is your position?

A. LAT 41°12.9'N, LONG 71°56.3'W
B. LAT 41°13.9’N, LONG 71°55.2'W
C. LAT 41°13.4'N, LONG 71°55.5'W
D. LAT 41°13.8'N, LONG 71°56.1'W
A

B. LAT 41°13.9’N, LONG 71°55.2’W

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23
Q

Block Island Sound Chart #13205TR

At 1016 your GPS position is LAT 41°07.6’N, LONG 71°37.9’W.At 1104 your position is LAT 41°00.2’N, LONG 71°29.4’W.What was the true course made good between the two positions?

A. 137˚T
B. 139°T
C. 143°T
D. 145°T
A

B. 139°T

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24
Q

Block Island Sound Chart #13205TR

The four soundings in the vicinity of LAT 41°12.2’N, LONG 71°33.0’W that are underlined with a bracket indicate __________.

A. that no bottom was found at the sounding depth indicated
B. a submerged rock not dangerous to surface navigation
C. the height a rock uncovers at low water springs
D. a submerged danger that is cleared to the indicated depth by a wire drag
A

D. a submerged danger that is cleared to the indicated depth by a wire drag

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25
Q

A number placed inside a bracket on the chart indicates that ________________

A. it is a Special Anchorage Area
B. anchoring is to be avoided
C. it has been cleared by a wire drag to the depth indicated by the number in the bracket
D. the location is protected by riprap
A

C. it has been cleared by a wire drag to the depth indicated by the number in the bracket

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26
Q

Block Island Sound Chart #13205TR

The irregular black line around a charted light such as Race Rock Light indicates that it is __________.

A. unwatched
B. surrounded by riprap
C. a minor light
D. constructed on an artificial island
A

B. surrounded by riprap

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27
Q

Block Island Sound Chart #13205TR - Variation: 15°W

You are on course 244° per standard magnetic compass when you sight Block Island Southeast Point Light in line with Block Island Aero Beacon bearing 326° per standard magnetic compass. What is your compass error __________?

A. 18° E
B. 3° E
C. 3° W
D. 17.5° W
A

D. 17.5° W

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28
Q

Block Island Sound Chart #13205TR

At 2016 your GPS position is LAT 41°07.6’N, LONG 71°37.8’W.At 2128 your position is LAT 41°00.4’N, LONG 71°29.4’W.What was the speed made good between the two positions?

A. 11.9 knots
B. 10.2 knots
C. 8.1 knots
D. 6.7 knots
A

C. 8.1 knots

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29
Q

Block Island Sound Chart #13205TR

Which chart should you use to enter Great Salt Pond?

A. 13204
B. 13205
C. 13205
D. 13217
A

D. 13217

30
Q

Block Island Sound Chart #13205TR

What soundings are indicated by a blue tint on this chart?

A. 30 fathoms or more
B. 30 feet or less
C. 30 feet or more
D. 30 fathoms or less
A

B. 30 feet or less

31
Q

Block Island Sound Chart #13205TR

What type of bottom can be found around the approaches to Point Judith Harbor of Refuge? __________.

A. Sandy bottom with shells
B. Irregular with rocky bottom and boulders
C. A mixture or mud and clay
D. Generally clear bottom with no obstructions
A

B. Irregular with rocky bottom and boulders

32
Q

Block Island Sound Chart #13205TR

The coastline between Point Judith and Watch Hill is __________.

A. marked by waterfalls from the highland ponds
B. low and marshy
C. sandy and broken by rocky points
D. heavily forested
A

C. sandy and broken by rocky points

33
Q

Block Island Sound Chart #13205TR - Variation: 15°W - (Deviation is 0° on all hand bearing compass problems)

You are on course 246° per standard magnetic compass when you take the following bearings per hand bearing compass:Little Gull Island Light 284°, Bartlett Reef Light 309°, Latimer Reef Light 020°. What is your position?

A. LAT 41°11.6'N, LONG 71°55.7'W
B. LAT 41°12.0'N, LONG 71°56.1'W
C. LAT 41°12.5'N, LONG 71°56.5'W
D. LAT 41°13.5'N, LONG 71°57.1'W
A

C. LAT 41°12.5’N, LONG 71°56.5’W

34
Q

Block Island Sound Chart #13205TR - Variation: 15°W- (Deviation is 0° on all hand bearing compass problems)

You are on a course when you take the following bearings per hand bearing compass: Little Gull Island Light 275°, Race Rock Light 303°, Latimer Reef Light 035°. What is your position?

A. LAT 41°13.5'N, LONG 71°58.3'W
B. LAT 41°14.1'N, LONG 71°59.9'W
C. LAT 41°13.0'N, LONG 71°58.9'W
D. LAT 41°12.4'N, LONG 71°56.2'W
A

A. LAT 41°13.5’N, LONG 71°58.3’W

35
Q

Block Island Sound Chart #13205TR

Block Island is __________.

A. surrounded by white sandy beaches
B. a low marshy land
C. hilly with elevations to 200 feet (60.5 m)
D. a national bird sanctuary
A

C. hilly with elevations to 200 feet (60.5 m)

36
Q

Block Island Sound Chart #13205TR

The passage between Great Gull Island and Plum Island __________.

A. is subject to weak and variable tidal currents
B. uncovers at extreme low water
C. should be avoided
D. shows a whirlpool at maximum ebb current when accompanied by NW gales
A

C. should be avoided

37
Q

Block Island Sound Chart #13205TR

At 1016 your GPS position is LAT 41°07.6’N, LONG 71°38.5’W.At 1116 your position is LAT 41°01.4’N, LONG 71°29.4’W.What was the course made good between the two positions?

A. 132°T
B. 135°T
C. 140°T
D. 143°T
A

A. 132°T

38
Q

Block Island Sound Chart #13205TR

What is the true course to steer between the entrance to Great Salt Pond and the entrance to Quonochontaug Pond (approx. 41˚ 19.8’N, 71˚ 43.2’W), if you are turning for 8.5 knots, and you allow for a current of 247˚ at 1.2 knots?

A. 314°
B. 332°
C. 340°
D. 350°
A

B. 332°

39
Q

Block Island Sound Chart #13205TR

Montauk Point Light is 168 feet above what reference level?

A. mean low water
B. mean tide level
C. ground level
D. mean high water
A

D. mean high water

40
Q

Block Island Sound Chart #13205TR

At 1016 your GPS position is LAT 41°07.6’N, LONG 71°38.5’W.At 1104 your position is LAT 41°00.4’N, LONG 71°29.4’W.What was the speed made good between the two positions?

A. 10.9 knots
B. 11.7 knots
C. 12.4 knots
D. 13.6 knots
A

C. 12.4 knots

41
Q

Block Island Sound Chart #13205TR - Variation: 15°W

What is the course to steer per standard magnetic compass between the entrance to Winnapaug Pond (LAT 41°19.6’N, LONG 71°45.8’W) and the entrance to Lake Montauk if you are turning for 8.5 knots, allowing for a current of 095° at 0.9 knot?

A. 200°
B. 213°
C. 231°
D. 249*
A

C. 231°

42
Q

Block Island Sound Chart #13205TR

When approaching Block Island Sound from Long Island Sound, you will enter waters governed by the International Rules of the Road when you __________.

A. pass through The Race
B. cross the territorial sea boundary
C. exit Block Island Sound to the east or south
D. None of the above, as Long Island Sound is governed by the International Rules of the Road
A

A. pass through The Race

43
Q

Block Island Sound Chart #13205TR - Variation: 15°W

You are on a course when you sight Block Island Southeast Point Light in line with the Block Island Aero Beacon dead ahead bearing 322° per standard magnetic compass. What is the compass error?

A. 2° W
B. 19° W
C. 13° W
D. 13° E
A

C. 13° W

44
Q

Block Island Sound Chart #13205TR

Determine the course per standard magnetic compass from the entrance to Quonochontaug Pond to the entrance to Great Salt Pond on Block Island.

A. 129.5°psc
B. 134.0°psc
C. 157.5°psc
D. 160.5°psc
A

D. 160.5°psc

45
Q

Block Island Sound Chart #13205TR

At 1523 your position is LAT 41°08.2’N, LONG 71°34.4’W.You are turning for 8.7 knots.What is your ETA at Shagwong Reef Buoy “7SR”?

A. 1653
B. 1700
C. 1709
D. 1718
A

C. 1709

46
Q

Block Island Sound Chart #13205TR

The trapezoidal shaped areas enclosed by a thin broken magenta line and located along the south coast of Long Island are __________.

A. designated training areas for Navy amphibious craft
B. disposal areas for unexploded munitions
C. fish trap areas
D. anchorage areas for small craft
A

C. fish trap areas

47
Q

Block Island Sound Chart #13205TR - Variation: 15°W

You are on a course of 288° per standard magnetic compass when you see the Watch Hill Light in line with Latimer Reef Light dead ahead. What is your deviation by observation?

A. 13° W
B. 17° W
C. 2° W
D. 4° E
A

C. 2° W

48
Q

Block Island Sound Chart #13205TR - Variation: 15°W - (Deviation is 0° on all hand bearing compass problems)

You are on course when you take the following bearings per hand bearing compass: Block Island Southeast Point Light 056˚, Block Island Aero Beacon 005˚, Montauk Point Light 269˚. What is your position?

A. LAT 41˚08.3’N, LONG 71˚35.0’W
B. LAT 41˚08.2’N, LONG 71˚34.5’W
C. LAT 41˚08.1’N, LONG 71˚34.3’W
D. LAT 41˚13.1’N, LONG 71˚34.0’W
A

C. LAT 41˚08.1’N, LONG 71˚34.3’W

49
Q

Block Island Sound Chart #13205TR

At 2330 your position is LAT 41°16.9’N, LONG 71°38.2’W. You are turning for 9.3 knots.What is your ETA at the entrance to Great Salt Pond on Block Island?

A. 2355
B. 0004
C. 0012
D. 0019
A

B. 0004

50
Q

Block Island Sound Chart #13205TR

Point Judith Harbor of Refuge __________.

A. is used only by tows
B. has moorings for small crafts along the breakwater
C. is easily entered in all sea conditions
D. is entered through either the east gap or the west gap
A

D. is entered through either the east gap or the west gap

51
Q

Block Island Sound Chart #13205TR

At 2016 your GPS position is LAT 41°07.6’N, LONG 71°33.8’W.At 2128 your position is LAT 41°00.4’N, LONG 71°29.4’W.What was the speed made good between the two positions?

A. 11.9 knots
B. 10.2 knots
C. 8.9 knots
D. 6.7 knots
A

D. 6.7 knots

52
Q

Block Island Sound Chart #13205TR

The precautionary area southeast of Block Island refers to a __________.

A. recommended traffic lane
B. military exercise zone
C. national marine refuge
D. dumping ground for hazardous wastes
A

A. recommended traffic lane

53
Q

Determine the course per standard magnetic compass from 0.2 mile south of Race Rock Light (LAT 41°14.6′ N, LONG 72°02.8′ W) to the entrance of the channel to Lake Montauk (west of Montauk Point).
A. 137.0° psc
B. 152.0° psc
C. 165.5° psc
D. 168.5° psc

A

D. 168.5° psc

54
Q

You are 3 miles due east of Montauk Point Light. What is the course per standard magnetic compass to a position 0.5 mile due south of Race Rock Light?

A. 324° psc
B. 328° psc
C. 331° psc
D. 339° psc

A

A. 324° psc

55
Q

Great Salt Pond on Block Island is ___________________.

A. entered through a dredged cut
B. not accessible in easterly gales
C. available for vessels up to a maximum draft of 8 feet (2.4m)
D. not affected by the tide

A

A. entered through a dredged cut

56
Q

At 1016 your position is LAT 41°07.6′ N, LONG 71°38.5′ W. At 1116 your position is LAT 41°01.4′ N, LONG 71°29.4′ W. What was the course made good between the two positions?

A. 132° T
B. 135° T
C. 140° T
D. 143° T

A

A. 132° T

57
Q

You sight North Dumpling Island Light in line with Latimer Reef Light (LAT 41°18.2′ N, LONG 71°56.0′ W) bearing 093° per standard magnetic compass. If your vessel was heading 185° per standard magnetic compass at the time, which of the following is TRUE?

A. The compass error is 2° W.
B. The deviation is 17° W.
C. The deviation is 2° W for all bearings of 093°.
D. The deviation table is correct for that heading.

A

D. The deviation table is correct for that heading.

58
Q

You are on course 137° per standard magnetic compass when you take the following bearings: Watch Hill Point Light 051° psc Montauk Point Light 184° psc Race Rock Light 279° psc What is your position?

A. LAT 41°15.2’ N, LONG 71°54.4’ W
B. LAT 41°15.1’ N, LONG 71°53.8’ W
C. LAT 41°15.1’ N, LONG 71°54.9’ W
D. LAT 41°15.0’ N, LONG 71°53.7’ W

A

A. LAT 41°15.2’ N, LONG 71°54.4’ W

59
Q

At 0943, your position is LAT 41°14.8′ N, LONG 71°54.3′ W. You are turning for 12.2 knots. What is your ETA at the entrance to Great Salt Pond on Block Island?

A. 1054
B. 1048
C. 1040
D. 1032

A

A. 1054

60
Q

The bottom approximately three miles to the ESE of Block Island Southeast Point has ___.

A. gravel
B. shale
C. stones
D. grit

A

A. gravel

61
Q

On the south and the east coasts of Block Island are circles with a dot in the center and labeled
CUP. This is a __________.
(A) calling-up-point used for traffic control
(B) domed structure useful for navigation
(C) steep depression in the surrounding hills that resembles a cup
(D) conspicuous object

A

(B) domed structure useful for navigation

62
Q

You are on course 157° per standard magnetic compass when you take the following bearings:
Little Gull Island Light 276°psc
Race Rock Light 301°psc
Latimer Reef Light 028°psc
What is your position?
(A) LAT 41°13.5’N, LONG 71°57.9’W
(B) LAT 41°13.6’N, LONG 71°57.0’W
(C) LAT 41°13.6’N, LONG 71°57.8’W
(D) LAT 41°13.5’N, LONG 71°57.4’W

A

(D) LAT 41°13.5’N, LONG 71°57.4’W

63
Q

You sight North Dumpling Island Light in line with Latimer Reef Light (LAT 41°18.2’N, LONG
71°56.0’W) bearing 091° per standard magnetic compass. If your vessel was heading 246° per
standard magnetic compass at the time, which of the following is TRUE?
(A) The deviation table is correct.
(B) The deviation is equal to but of opposite sign to the variation.
(C) The deviation is equal to the variation.
(D) The compass error is 18°W for that heading.

A

(D) The compass error is 18°W for that heading.

64
Q

At 1014 you depart the entrance to Lake Montauk with light “1” close aboard. Your course is 066°
per standard magnetic compass, and the speed is 8.6 knots. At 1232 your position is LAT 41°20.0’N,
LONG 71°40.0’W. What is the course made good?
o (A) 047°T
o (B) 044°T
o (C) 040°T
o (D) 036°T

A

(C) 040°T

65
Q

What is the velocity of the maximum ebb current approximately 1.1 miles ENE of Little Gull Island in
the afternoon of 25 April 1983?
o (A) 4.2 knots
o (B) 1.3 knots
o (C) 4.7 knots
o (D) 5.5 knots

A

(D) 5.5 knots

66
Q

At 1113 you are in the entrance to Great Salt Pond on Block Island with buoy “5” close aboard. What
is your ETA at light “1” at the mouth of the approaches to Lake Montauk if you make good 9.6 knots?
o (A) 1310
o (B) 1301
o (C) 1249
o (D) 1254

A

(B) 1301

67
Q

What is the true course to steer between the entrance to Winnapaug Pond (LAT 41°19.6’N, LONG
71°45.8’W) and the entrance to Lake Montauk (LAT 41°04.8’N, LONG 71°56.3’W), if you are turning
for 6.5 knots, allow for a current of 295°T at 0.9 knot, and an easterly wind is causing 4° of leeway?
o (A) 196°T
o (B) 217°T
o (C) 200°T
o (D) 213°T

A

(A) 196°T

68
Q

At 0726 you depart Lake Montauk with light 1 close aboard and set course 065° per standard
magnetic compass at 6.7 knots. At 0912 your GPS position is LAT 41°10.5’N, LONG 71°46.6’W.
What is the current?
o (A) 227°T at 0.9 knot
o (B) 151°T at 1.2 knots
o (C) 240°T at 1.4 knots
o (D) 164°T at 0.7 knot

A

(C) 240°T at 1.4 knots

69
Q

You are 3 miles due east of Montauk Point Light. What is the course per standard magnetic
compass to LAT 41°00.0’N, LONG 71°30.0’W?
o (A) 130°psc
o (B) 122°psc
o (C) 108°psc
o (D) 124°psc

A

(B) 122°psc

70
Q

What are the soundings on this chart measured in?
o (A) feet
o (B) meters
o (C) fathoms
o (D) yards

A

(A) feet

Marine Navigation (2 decks)

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