On 12 April at 0515 ZT, morning stars were observed, and the vessel's position was determined to be LAT 21°05'S, LONG 16°30'W. Your vessel is steaming at 19 knots on a course of 278°T. A sextant observation of the Sun's lower limb is made at 0930 ZT. The chronometer reads 10h 28m 25s, and the sextant altitude (hs) is 40°15.9'. The index error is 2.5' off the arc, and the chronometer error is 2m 15s slow. Your height of eye on the bridge is 57 feet. What are the intercept (a) and azimuth (Zn) from the assumed position of this sight?

Question

Accepted Answer

Option D: Zn 057.0°, a 17.7' A. Advancing the morning fix position to the time of the sun observation via dead reckoning establishes the intercept and azimuth through standard intercept table (Pub. No. 229/249) computations, yielding Zn 057.0° and an intercept of 17.7' Away.