Yesterday your chronometer read 02h 59m 58s at the 1500 GMT time tick. Today the chronometer reads 03h 00m 02s at the 1500 GMT time tick. What is the chronometer error?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 02s fast
Chronometer error is the difference between the indicated time and the correct GMT. With the chronometer reading 03h 00m 02s at the 1500 GMT time tick (which is 03h 00m 00s), the instrument is 02 seconds fast. The previous day's reading is not required for this calculation.
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