You are taking a time tick using the 1930 signal from Rio de Janeiro, Brazil. You hear the preparatory signal "CQ DE PPE" repeated several times followed by a short dash (0.4 sec), 60 dots (0.1 sec each) and another short dash. At the beginning of the last dash, the comparing watch reads 07h 30m 08s. When compared to the chronometer, the comparing watch reads 07h 31m 48s, and the chronometer reads 07h 32m 16s. What is the chronometer error?
Official USCG Answer & Rule Citation
Correct Answer: Option B — 0m 36s fast
Comparing watch time is corrected using time tick radio signals. Chronometer error is determined by subtracting the correct UTC from the chronometer reading. Applying the standard time comparison formula yields 0m 36s fast, adhering to standard marine chronometer rating practices outlined in Bowditch.
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