Exercise – 10

1. On 1^ST Sept 1992, in DR 230 18’N 1650 02’E, the sextant altitude of the Sun’s UL near the meridian was 750 01.7’ when chron (error 03m 21s slow) showed 00h 45m 51s. If IE was 3.2’ off the arc and HE was 20m, find the direction of the PL and a position through which it passes.

Solution –

2. On 2^nd May 1992, in DR 150 36’S 0800 11’W, the sextant altitude of the Sun’s LL near the meridian was 580 25.6’ when chron (error 02m 18s fast) showed 05h 40m 06s. If IE was 1.6’ on the arc and HE was 15m, find the direction of the PL and the lat where it cuts the DR long.

Solution –

3. On 6^th March 1992, in EP 52⁰ 12’N 170⁰ 40’E, the sextant altitude of the Sun’s UL near the meridian was 310 59.8’ when chron (error 01m 50s fast) showed 01h 29m 20s. If IE was 2.3’ on the arc and HE was 40m, find the direction of the PL and a position through which to draw it.

Solution –

4. On 21^st Jan 1992, in DR 00⁰ 00’ 970 48’W, the sextant altitude of the Sun’s LL near the meridian was 690 28.7’ when chron (error 12m 05s slow) showed 06h 13m 27s. If IE was 2.0’ off the arc and HE was 12m, find the direction of the PL and a position through which is passes.

Solution –

5. On 23^rd Sept 1992, in EP 480 20’S 1580 46’E, the sextant altitude of the Sun’s LL near the meridian was 410 36.7’ at 01h 11m 16s chron time. If chron error was 11m 04s fast, IE was 3.4’ on the arc and HE was 17m, find the direction of the PL and the lat where it cuts the DR long.

Solution –