EXERCISE-25

1. On 1^st Sept 1992, PM at ship in DR 20⁰ 58’N 120⁰ 19’W the sextant altitude of the Moon’s LL was 33⁰6’ at 02h 35m 55s chron time (error 10m 42s slow). If IE was 03’ off the arc and HE was 30m, find the direction of the PL and a position through which to draw it.

Solution –

2. On 22^nd Sept 1992, AM at ship in DR 10⁰ 02’S 76⁰ 50’E, the sextant altitude of the Moon’s LL was 0.6’ on the arc and HE was 14m, find the direction of the PL and the longitude where it cuts the DR lat.

Solution –

3. On 6^th March 1992, AM at ship in DR 00⁰ 00’ 60⁰ 50’W, the Sextant altitude of the Moon’s UL was 44⁰9’ at 02h 44m 48s chron time (error 11m 16s fast). If HE was 15m and IE was 0.4’ off the arc, find the direction of the PL and a position through which it passes.

Solution –

4. On 25^th Feb 1992, AM at ship in DR 35⁰ 03’S 87⁰ 11’E, the observed altitude of the Moon’s UL was 46⁰5’ at 03h 16m 26s chron time (error 05m 06s fast). If HE was 18m, find the direction of the PL and a position through which it passes.

Solution –                                            

5. On 30^th Nov 1992, PM at ship in DR 27⁰ 45’S 140⁰ 20’W, the observed altitude of the Moon’s UL was 40⁰8’ at 11h 10m 08s chron time (error 00m 02s slow). If HE was 10m, find the direction of the PL and the longitude where it cuts the DR lat.

Solution –