Jan 2025 AM TCN

Q.4) A vessel intends to steam a Great Circle track from 50° 04’ N 005° 45’ W to 47° 34’ N 052° 40’ W. Find the distance, initial course to set & position of the midpoint along the track.

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Q.5) A vessel took two simultaneous observations on GMT 16th Jan 1992 23h 40m 02s. The first observation of Venus which was east of the observer’s meridian gave sextant altitude of 19° 40.5’. The second observation of Moon which was South of the observer (Azimuth 180°) gave Sextant altitude of the upper limb 82° 11.8’. The index error of the sextant was 1.2’ off the arc & the height of eye of observer 31 m. Find the position of the vessel.

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Q.6) A vessel in DR 49° 30’ S 069° 14’ E took a star sight & obtained intercept of 9.5’ towards bearing 056°. After this sight vessel steered 144° (T) for 35 miles and obtained another intercept of 8.2’ towards and azimuth 324°. Find vessel’s position at second observation if the DR used for calculating second observation was obtained by applying the run on ITP position.

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Q.7) In the southern hemisphere, the meridian altitude of a star above and below the pole was 63° 12’ and 17° 46’ respectively, both times bearing South. Find the latitude of observer and the declination of the star.

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Q.8) On a certain day the Sun’s RA was 05h 57m 04s when the GHA Aries was 343° 54.3’. If the Obliquity of the ecliptic was 23° 27’ find the Sun’s GP.

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