On 26 May your 0723 zone time DR position is LAT 24°50.0'N, LONG 38°11.0'W. At that time, you observe the Sun bearing 076.5°psc. The chronometer reads 10h 25m 43s, and the chronometer error is 02m 57s fast. The variation is 7°W. What is the deviation of the standard magnetic compass?

Correct Answer: Option D — 10.7°E

Convert chronometer time to GMT using the error, find LHA based on DR longitude, and obtain the computed azimuth (Zn) from sight reduction tables. The difference between Zn and standard compass bearing yields compass error; applying variation leaves the resulting compass deviation.