Exercise-13

  1. On 29th Nov 1992, AM at ship in DR 250 30’S 1070 20’W, the sextant altitude of the star RIGEL was 3503’ when the chron (error 02m 50s fast) showed 11h 32m 10s. If IE was 2.8’ on the arc and HE was 12m, find the direction of the PL and a position through which to draw it.
Solution –1A
1 B
1C
  1. On 22nd Sept 1992, PM at ship in DR 600 10’N 920 27’E, the sextant altitude of the star ARCTURUS was 250 01’ when chron (error 05m 01s slow) showed 00h 46m 31s. If IE was 0.2’ on the arc and HE was 17m, find the direction of the PL and the longitude where it crosses the DR lat.
Solution –2A 2B 2C
  1. On 19th Jan 1992, at about 1900 at ship in DR 000 02’N 1700 50’E, the sextant altitude of the star BETELGEUSE was 4301’ when the chron (error 01m 18s fast) showed 07h 35m 02s. If HE was 18m and IE was 1.3’ off the arc, required the direction of PL and a position through which it passes.
Solution –3A 3B 3C
  1. On 30th April 1992, PM at ship in DR 340 18’S 400 20’W, the observed altitude of the star SIRIUS was 5707’ at 08h 51m 38s chron time. The chron error was 00m 10s slow at 12 GMT on 22nd April and its daily rate was 3s gaining. If HE was 21m, find the direction of the PL and a position through which it passes.
Solution –4A 4B 4C
  1. On 31st Aug 1992, AM at ship in DR 400 30’N 640 56’E, the sextant altitude of the star DIPHDA was 2104’ when the chron (error nil) showed 00h 20m 26s. If IE was 0.9’ off the arc and HE was 9m, find the direction of the PL and a position through which it passes.
Solution –5A
5B 5C

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From Marine Enclyopedia to MARINE GYAAN ACADEMY in Lucknow - Preparing YOUTH to become SEAFARERS ( for IMU-CET and various courses) From Marine Enclyopedia to MARINE GYAAN ACADEMY in Lucknow - Preparing YOUTH to become SEAFARERS ( for IMU-CET and various courses) From Marine Enclyopedia to MARINE GYAAN ACADEMY in Lucknow - Preparing YOUTH to become SEAFARERS ( for IMU-CET and various courses) From Marine Enclyopedia to MARINE GYAAN ACADEMY in Lucknow - Preparing YOUTH to become SEAFARERS ( for IMU-CET and various courses)