LAN 1200 Running fix Flashcards
On 7 November your 0830 zone time position was LAT 27° 36.0’ N, LONG 162° 19.0’ W. Your vessel was steaming on course 289° T at a speed of 19.0 knots. An observation of the Sun’s lower limb was made at 0945 ZT. The chronometer read 08h 43m 11s and was slow 01m 51s. The observed altitude (Ho) was 38° 21.1’. Local Apparent Noon (LAN) occurred at 1138 zone time. The observed altitude (Ho) was 45° 35.0’. What was the longitude of your 1200 zone time running fix?
A. 163° 38.8’ W
B. 163° 34.0’ W
C. 163° 30.2’ W
D. 163° 26.0’ W
(A) because it is 0830 Zone time and A is the only choice with 8 in it.
On 8 February your 0800 zone time (ZT) position was LAT 28° 55.0’ S, LONG 52° 27.0’ W. Your vessel was steaming on course 036° T at a speed of 19.0 knots. An observation of the Sun’s lower limb was made at 0938 ZT. The chronometer read 12h 37m 23s and was slow 01m 24s. The observed altitude (Ho) was 45° 29.2’. Local Apparent Noon (LAN) occurred at 1240 ZT. The observed altitude (Ho) was 77° 10.5’. What was the longitude of your 1200 ZT running fix?
A. 51° 29.6’ W
B. 51° 31.4’ W
C. 51° 33.1’ W
D. 51° 35.4’ W
(D) because it is February and the answer choices do not have Lat 52.2’ Long 24.0’
(FEB- Always D unless it has an answer choice with minutes of Lat 52.2’ and Long 24.0’)
On 11 November your 0730 zone time position was LAT 19° 58.0’ N, LONG 143° 54.0’ W. Your vessel was steaming on course 084° T at a speed of 15.0 knots. An observation of the Sun’s lower limb was made at 0931 ZT. The chronometer read 07h 29m 22s and was slow 02m 22s. The observed altitude (Ho) was 44° 17.6’. LAN occurred at 1125 zone time (ZD +10). The observed altitude (Ho) was 52° 17.4’. What was the longitude of your 1200 zone time running fix?
A. 142° 34.7’ W
B. 142° 37.1’ W
C. 142° 40.2’ W
D. 142° 44.2’ W
(C) because it is 0730 local time and is only longitude.
0730- Always C unless answers are a full position then its A.
On 29 April your 0530 zone time position was LAT 23° 04.0’ S, LONG 162° 12.0’ E. Your vessel was steaming on course 120° T at a speed of 9.0 knots. An observation of the Sun’s upper limb was made at 0830 ZT. The chronometer read 09h 27m 32s and was slow 02m 24s. The observed altitude (Ho) was 24° 58.0’. LAN occurred at 1205 zone time. The observed altitude (Ho) was 52° 04.0’. What was the longitude of your 1200 zone time running fix?
A. LONG 163° 02.1’ E
B. LONG 163° 06.0’ E
C. LONG 163° 09.5’ E
D. LONG 163° 11.3’ E
(B) because it is 0530
On 20 September your 0730 zone time position was LAT 28° 58.0’ N, LONG 152° 26.0’ W. Your vessel was steaming on course 225° T at a speed of 19.0 knots. An observation of the Sun’s lower limb was made at 0931 ZT. The chronometer read 07h 29m 20s and was slow 02m 22s. The observed altitude (Ho) was 44° 14.4’. LAN occurred at 1206 zone time. The observed altitude (Ho) was 62° 49.5’. What was the longitude of your 1200 zone time running fix?
A. LONG 153° 32.5’ W
B. LONG 153° 27.2’ W
C. LONG 153° 23.5’ W
D. LONG 153° 20.0’ W
(C) because it is 0730 local time and its only longitude
0730- Always C unless answers are a full position then its A
On 17 January your 0730 zone time position was LAT 22° 26.0’ N, LONG 152° 17.0’ E. Your vessel was steaming on course 136° T at a speed of 17.0 knots. An observation of the Sun’s lower limb was made at 1015 ZT. The chronometer read 00h 13m 23s and was slow 01m 49s. The observed altitude (Ho) was 40° 25.7’. LAN occurred at 1222 zone time. The observed altitude (Ho) was 47° 48.1’. What was the longitude of your 1200 zone time running fix?
A. LONG 153° 04.2’ E
B. LONG 153° 08.3’ E
C. LONG 153° 13.1’ E
D. LONG 153° 18.6’ E
(C) because it is 0730 local time and its only longitude
0730- Always C unless answers are a full position then its A
On 17 January your 0730 zone time fix gives you a position of LAT 22° 26.0’ S, LONG 152° 17.0’ E. Your vessel is steaming on a course of 116° T at a speed of 17 knots. An observation of the Sun’s lower limb is made at 1015 zone time. The chronometer reads 00h 13m 23s, and the chronometer error is 01m 49s slow. The observed altitude (Ho) is 66° 02.1’. LAN occurs at 1152 zone time and a meridian altitude of the Sun’s lower limb is made. The observed altitude (Ho) is 87° 54.2’. Determine the vessel’s 1200 zone time position.
A. LAT 22° 53.8’ S, LONG 153° 25.6’ E
B. LAT 22° 53.8’ S, LONG 153° 28.8’ E
C. LAT 22° 56.3’ S, LONG 153° 25.6’ E
D. LAT 22° 56.3’ S, LONG 153° 28.8’ E
(A) because it is 0730 and it is not C (it is a full position)
(0730- Always C unless answers are a full position then its A)
On 29 June your 0800 zone time fix gives you a position of LAT 26° 16.0’ S, LONG 61° 04.0’ E. Your vessel is steaming a course of 079° T at a speed of 15.5 knots. An observation of the Sun’s upper limb is made at 0905 zone time, and the observed altitude (Ho) is 25° 20.1. The chronometer reads 05h 08m 12s, and the chronometer error is 02m 27s fast. Local apparent noon occurs at 1154 zone time, and a meridian altitude of the Sun’s lower limb is made. The observed altitude (Ho) for this sight is 40° 44.2’. Determine the vessel’s 1200 zone time position.
A. LAT 26° 02.0’ S, LONG 62° 05.0’ E
B. LAT 26° 02.0’ S, LONG 62° 23.2’ E
C. LAT 26° 05.1’ S, LONG 62° 06.3’ E
D. LAT 25° 56.0’ S, LONG 62° 03.0’ E
(A) because it is June
On 2 April your 0830 zone time fix gives you a position of LAT 20° 16.0’ S, LONG 004° 12.0’ E. Your vessel is steaming a course of 143° T at a speed of 18.0 knots. An observation of the Sun’s upper limb is made at 0903 zone time, and the observed altitude (Ho) is 42° 39.6’. The chronometer reads 09h 05m 40s, and the chronometer error is 02m 15s fast. Local apparent noon occurs at 1145 zone time, and a meridian altitude of the Sun’s lower limb is made. The observed altitude (Ho) for this sight is 63° 46.2’. Determine the vessel’s 1200 zone time position.
A. LAT 21° 10.1’ S, LONG 004° 53.9’ E
B. LAT 21° 14.0’ S, LONG 004° 55.0’ E
C. LAT 21° 18.0’ S, LONG 005° 00.5’ E
D. LAT 22° 42.0’ S, LONG 004° 57.0’ E
(C) because it is 0830 zone time and c is the only answer with 8 in it.
On 24 March your 0800 zone time fix gives you a position of LAT 22° 16.0’ N, LONG 31° 45.0’ W. Your vessel is steaming a course of 285° T at a speed of 16.5 knots. An observation of the Sun’s upper limb is made at 0938 zone time, and the observed altitude (Ho) is 46° 32.2’. The chronometer reads 11h 41m 01s, and the chronometer error is 02m 50s fast. Local apparent noon occurs at 1214 zone time, and a meridian altitude of the Sun’s lower limb is made. The observed altitude (Ho) for this sight is 68° 55.8’. Determine the vessel’s 1200 zone time position.
A. LAT 22° 35.0’ N, LONG 30° 29.0’ W
B. LAT 22° 35.0’ N, LONG 32° 51.0’ W
C. LAT 22° 36.0’ N, LONG 32° 10.5’ W
D. LAT 22° 36.0’ N, LONG 32° 55.2’ W
(B) because it is March
On 27 March your 0730 zone time position is LAT 28° 16’ N, LONG 56° 37’ W. Your vessel is on course 158° T at a speed of 15.0 knots. An observation of the Sun’s lower limb is made at 0915 zone time. The chronometer reads 01h 14m 11s, and the chronometer error is 00m 53s slow. The observed altitude (Ho) is 45° 10.7’. LAN occurs at 1150 zone time, and a meridian altitude of the Sun’s lower limb is made. The observed altitude (Ho) is 65° 32.8’. Determine the vessel’s 1200 zone time position.
A. LAT 27° 08.8’ N, LONG 56° 04.2’ W
B. LAT 27° 08.8’ N, LONG 56° 10.3’ W
C. LAT 27° 11.6’ N, LONG 56° 04.2’ W
D. LAT 27° 11.6’ N, LONG 56° 10.3’ W
(A) because it is 0730 zone time and (its a full position)
0730- Always C (4 Questions) unless answers are a full position then its A
On 22 February your 0800 zone time position is LAT 24° 16’ S, LONG 95° 37’ E. Your vessel is on course 126° T at a speed of 14 knots. An observation of the Sun’s lower limb is made at 0945 zone time. The chronometer reads 03h 47m 22s, and the chronometer error is 02m 37s fast. The observed altitude (Ho) is 57° 02.1’. LAN occurs at 1148 zone time, and a meridian altitude of the Sun’s lower limb is made. The observed meridian altitude (Ho) is 75° 22.3’. Determine the vessel’s 1200 zone time position.
A. LAT 24° 49.3’ S, LONG 96° 24.0’ E
B. LAT 24° 49.3’ S, LONG 96° 27.2’ E
C. LAT 24° 52.2’ S, LONG 96° 24.0’ E
D. LAT 24° 52.2’ S, LONG 96° 27.2’ E
(C) because it is February and Lat is 52.2’ Long 24.0’
FEB- Always D unless it has an answer choice with minutes of Lat 52.2’ and Long 24
On 8 February your 0800 zone time position is LAT 21° 55’ S, LONG 52° 27’ W. Your vessel is on course 056° T at a speed of 17.5 knots. An observation of the Sun’s lower limb is made at 0938 zone time, and the observed altitude (Ho) is 46° 06.5’. The chronometer reads 12h 37m 23s, and the chronometer error is 1m 24s slow. LAN occurs at 1243 zone time, and a meridian altitude of the Sun’s lower limb is made. The observed altitude (Ho) for this sight is 83° 56.1’. Determine the vessel’s 1200 zone time position.
A. LAT 20° 57.0’ S, LONG 51° 21.5’ W
B. LAT 20° 58.0’ S, LONG 51° 25.5’ W
C. LAT 21° 04.0’ S, LONG 51° 12.0’ W
D. LAT 21° 04.0’ S, LONG 51° 21.5’ W
(D) because it is February and the answer does not have Lat 52.2’ Long 24.0
(FEB- Always D unless it has an answer choice with minutes of Lat 52.2’ and Long 24)
On 6 December your 0800 zone time DR position was LAT 21° 48.0’ N, LONG 124° 30.0’ E. Your vessel was steaming on course 045° T at a speed of 20.0 knots. An observation of the Sun’s lower limb was made at 1012 ZT. The chronometer read 02h 10m 42s and was slow 01m 02s. The observed altitude (Ho) was 41° 17.1’. LAN occurred at 1129 zone time. The observed altitude (Ho) was 44° 53.7’. What was the longitude of your 1200 zone time running fix?
A. LONG 125° 25.0’ E
B. LONG 125° 28.9’ E
C. LONG 125° 32.5’ E
D. LONG 125° 35.2’ E
(D) because it is December
