On 24 May your vessel's 1000 ZT position is LAT 25°36.0'N, LONG 118°39.5'W, when you take an azimuth of the Sun. Determine the gyro error using the azimuth information. Chronometer time: 06h 21m 48s Chronometer error: fast 01m 36s Gyro bearing: 099.4° Variation: 11.1°E

Correct Answer: Option B — 1.3°W

Determine the Sun's true azimuth using the Nautical Almanac. The difference between the true azimuth and the gyro bearing of 099.4° provides the gyro error. Based on the calculated true azimuth, the gyro error is 1.3°W, which is the standard procedure for verifying gyrocompass alignment during daylight hours.