On 27 June your 0734 zone time DR position is LAT 22°14.0'N, LONG 53°52.0'W. At that time, you observe the Sun bearing 069.5°psc. The chronometer reads 11h 32m 51s and the chronometer error is 01m 26s slow. The variation is 5°E. What is the deviation of the standard magnetic compass?

Correct Answer: Option C — 1.6°E

Convert chronometer time to GMT and obtain celestial coordinates from the Nautical Almanac. Compute true bearing via standard Bowditch celestial sight reduction procedures. Apply local variation (5°E) to find the magnetic bearing, then compare it against the standard magnetic compass observation to isolate the 1.6°E deviation.