Rules of the Road · Restricted Visibility Signals
A vessel restricted in ability to maneuver (RAM) is underway in restricted visibility. What fog signal must she sound?
- AOne prolonged blast every 2 minutes
- BTwo prolonged blasts every 2 minutes
- COne prolonged followed by two short blasts every 2 minutes✓ Correct
- DOne prolonged followed by three short blasts every 2 minutes
Explanation
Under Rule 35(c), a RAM vessel underway sounds one prolonged blast followed by two short blasts at intervals not exceeding 2 minutes. This signal is shared with NUC, sailing, fishing, constrained-by-draft, and towing vessels. A RAM vessel anchored uses the standard anchor bell of Rule 35(g).
Authority: 72 COLREGS Rule 35(c)
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