OUPV & 100-Ton Master · Sea Service
On a vessel, what counts as one 'day' of sea service for license credit?
- AAny calendar day on which the vessel got underway, regardless of hours
- BA full 24-hour period aboard
- CAt least 4 hours of watchstanding or day-working aboard a vessel underway✓ Correct
- DEight hours of dock work
Explanation
The Coast Guard defines a day of service as a minimum of four hours aboard a vessel in operation. Time in port not underway, and days shorter than four hours, generally do not count.
Authority: 46 CFR 10.107 (definition of 'day')
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