Rules of the Road · Sound Signals — RV Stopped
In restricted visibility, a power-driven vessel underway but stopped and making no way through the water sounds:
- AOne prolonged blast
- BTwo prolonged blasts in succession✓ Correct
- CThree prolonged blasts
- DOne prolonged plus two short
Explanation
Underway but stopped (no way on), she sounds two prolonged blasts in succession with about 2 seconds between them, at intervals of not more than 2 minutes.
Authority: COLREGS/Navigation Rules, Rule 35(b)
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