Rules of the Road · Restricted Visibility Signals
A power-driven vessel is underway in fog but has stopped and is not making way. What signal does she sound under Rule 35(b)?
- AOne prolonged blast every 2 minutes
- BTwo prolonged blasts in succession every 2 minutes✓ Correct
- COne prolonged blast followed by two short blasts every 2 minutes
- DThree short blasts every 2 minutes
Explanation
Rule 35(b) prescribes two prolonged blasts in succession, with an interval of about 2 seconds between them, repeated at intervals not exceeding 2 minutes. This distinguishes a stopped (not making way) power-driven vessel from one making way (one prolonged blast, Rule 35(a)).
Authority: 72 COLREGS Rule 35(b)
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