Yesterday your chronometer read 03h 01m 56s at the 1500 GMT time tick. Today your chronometer read 03h 01m 58s at the 1500 GMT time tick. What is the chronometer error?
Official USCG Answer & Rule Citation
Correct Answer: Option A — 01m 58s fast
Chronometer error is the difference between the chronometer reading and the correct GMT. Since the chronometer reads 03h 01m 58s when the actual time is 1500 GMT (03h 00m 00s), the instrument is 01m 58s fast. The previous day's reading is irrelevant to determining the current error.
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