On 27 March your 0730 zone time position is LAT 28°16'N, LONG 56°37'W. Your vessel is on course 158°T at a speed of 15.0 knots. An observation of the Sun's lower limb is made at 0915 zone time. The chronometer reads 01h 14m 11s, and the chronometer error is 00m 53s slow. The observed altitude (Ho) is 45°10.7'. LAN occurs at 1150 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) is 65°32.8'. Determine the vessel's 1200 zone time position.

Question

Accepted Answer

Option C: LAT 27°08.8'N, LONG 56°04.2'W. Advancing the 0730 fix along the DR track, updating with the morning sight intercept, and applying the meridian altitude sight at LAN per Bowditch celestial navigation techniques fixes the vessel's precise 1200 position at LAT 27°08.8'N, LONG 56°04.2'W.