1. On 5 May 1981, at 1953 zone time, you take a sextant observation of Polaris. Your vessel's DR position is Lat. 29° 30.0' N, Long. 66° 25.7' W, and your sextant reads 29° 07.2'. Your chronometer reads 11h 51m 45s, and your chronometer error is 01m 36s slow. Your height of eye is 56 feet, and the index error for your sextant is 1.5' on the arc. What is the latitude of your vessel from your observation of Polaris?
A. 29° 14.3' N
B. 29° 23.6' N
C. 29° 32.3' N
D. 29° 38.8' N
2. On 14 March 1981, your 1846 ZT DR position is Lat. 21° 57.6' N, Long. 132° 16.2' W. At that time you observe Polaris with a sextant altitude (hs) of 22° 16.8'. The chronometer time of the sight is 03h 45m 10s, and the chronometer error is 01m 32s slow. The index error is 3.2' off the arc, and the height of eye is 44.9 feet. What is your latitude by Polaris?
A. 21° 32.4' N
B. 21° 49.8' N
C. 21° 51.0' N
D. 21° 53.1' N
3. On 24 September 1981, your 1841 zone time DR position is Lat. 25° 15.0' N, Long. 129° 34.5' E. At that time you observe Polaris with a sextant altitude (hs) of 25° 20.8'. The chronometer time of the sight is 09h 38m 12s, and the chronometer error is 03m 12s slow. The index error is 4.3' off the arc, and the height of eye is 52.0 feet. What is your latitude by Polaris?
A. 24° 28.4' N
B. 25° 16.0' N
C. 25° 37.6' N
D. 25° 42.3' N
4. On 16 January 1981, at 1804 zone time, you take a sextant observation of Polaris. Your vessel's DR position is Lat. 36° 12.0' N, Long. 124° 36.0' W, and your sextant reads (hs) 37° 16.4'. Your chronometer reads 02h 02m 12s, and is 01in 36s slow. Your height of eye is 60 feet, and the index error is 1.5' on the arc. From your observation of Polaris, what is the latitude of your vessel?
A. 36° 12.6' N
B. 36° 14.4' N
C. 36° 17.9' N
D. 36° 20.2' N
5. On 29 July 1981, your 1930 zone time DR position is Long. 164° 26.0'E. At that time you observe Polaris with a sextant altitude (hs) of 23° 46.8'. The chronometer time of the sight is 08h 32m 18s, and the chronometer error is 02m 26s fast. The index error is 2.7' on the arc, and the height of eye is 56.0 feet. What is your latitude by Polaris?
A. 24° 01.9' N
B. 24° 19.5' N
C. 24° 31.7' N
D. 25° 19.6' N
6. On 7 December 1981, your 0350 ZT position is LAT 350 42' N, LONG 17° 38' E. You observe Polaris bearing 359.7° pgc. At the time of the observation the helmsman noted that he was heading 016° pgc and 014° psc. The variation is 1.0° E. What is the deviation for that heading?
A. 0.5° E
B. 0.0°
C. 0.5° W
D. 1.5° W
7. On 11 January 1981, your 0450 ZT position is Lat. 38° 42.0' N, Long. 14° 16.0' W. You observe Polaris bearing 358.5° pgc. At the time of the observation the helmsman noted that he was heading 160° pgc and 173° psc. The variation is 9° W. What is the deviation for that heading?
A. 1° E
B. 1° W
C. 3° W
D. 13° W
8. On 11 July 1981, your 0240 ZT position is Lat. 14° 52.0' N, Long. 34° 23.0' W. You observe Polaris bearing 359.8° pgc. At the time of the observation the helmsman noted that he was heading 279° pgc and 299° psc. The variation is 19° W. What is the deviation for that heading?
A. 0.0°
B. 1° E
C. 1° W
D. 3° W
