OUPV & 100-Ton Master · Required Equipment — Sound Signaling
A vessel of less than 12 meters must carry, for sound signaling, at minimum:
- AA foghorn audible 10 miles
- BA bell and gong only, no whistle
- CNothing at all
- DSome means of making an efficient sound signal (e.g., a whistle/horn)✓ Correct
Explanation
Under Rule 33, vessels under 12 m are not required to carry the bell/whistle prescribed for larger vessels but must carry some other means of making an efficient sound signal. Larger vessels (12 m and over) must have a whistle; 20 m and over must also have a bell.
Authority: Navigation Rules, Rule 33; 33 CFR 86
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