On 21 November at 0430 ZT, morning stars were observed, and the vessel's position was LAT 22°14.0'S, LONG 79°23.0'E. Your vessel is steaming at 14.5 knots on a course of 246°T. A sextant observation of the Sun's lower limb is made at 0816 ZT. The chronometer reads 03h 14m 16s, and the sextant altitude (hs) is 44°29.2'. The index error is 1.0' on the arc, and the chronometer error is 01m 47s slow. Your height of eye is 61.0 feet (18.6 meters). What is the azimuth (Zn) and intercept (a) of this sight using the assumed position method?

Question

Accepted Answer

Option D: Zn 095.6°, a 6.6' T. Correct the sextant altitude for index error, dip, and refraction. Determine GMT and extract GHA and Declination. Using Pub. 229, find the calculated altitude (Hc) and azimuth (Zn). The intercept (a) is the difference between Ho and Hc; a positive value indicates the intercept is toward the body.