Yesterday your chronometer read 03h 01m 56s at the 1500 GMT time tick. Today your chronometer read 03h 01m 54s at the 1500 GMT time tick. What is the chronometer rate?
Official USCG Answer & Rule Citation
Correct Answer: Option C — -2s
Chronometer rate is the daily gain or loss. Yesterday, the error was 1m 56s fast; today, it is 1m 54s fast. The chronometer has gained 2 seconds less than it did the previous day, meaning it is losing time relative to its previous performance. Thus, the rate is -2s.
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