OUPV & 100-Ton Master · Sea Service
For credentialing, a 'day' of sea service is generally credited as a minimum of:
- A4 hours underway
- B8 hours of service on a vessel✓ Correct
- C12 hours
- D24 continuous hours aboard
Explanation
The Coast Guard credits a day of sea service as a minimum of 8 hours of watch-standing or day-working on a vessel. On vessels operating more than 12 hours per day, no more than one day may be credited in any 24-hour period.
Authority: 46 CFR Part 10, sea service
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