97. On 11 December your 1816 ZT DR position is LAT 26° 30.0' N, LONG 140° 35.0' E. At that time, you observe Venus bearing 230° pgc. The chronometer reads 09h 14m 52s and the chronometer error is 01m 02s slow. The variation is 3.5° E. What is the gyro error?

The gyro error is calculated as the difference between the true azimuth and the gyro bearing. The true azimuth of Venus, determined from the Nautical Almanac and sight reduction tables, is 233.3T, while the observed gyro bearing is 230.0 pgc. Therefore, the gyro error is 3.3 E (true bearing greater than gyro bearing).