Rules of the Road · Bridge-to-Bridge Radiotelephone
Which Inland Rules provision lets a vessel omit the prescribed whistle signals — a feature absent from 72 COLREGS?
- AVessels must use radar at all times
- BVessels that reach a passing agreement by radiotelephone are not obligated to sound the prescribed whistle signals✓ Correct
- CInland waters use a port-side passing rule instead of the starboard-side rule
- DAll vessels must anchor during restricted visibility
Explanation
Inland Rule 34(h) provides that a vessel which reaches agreement with another vessel by radiotelephone (as authorized by the Bridge-to-Bridge Radiotelephone Act) is not obligated to sound the whistle signals prescribed by Rule 34, though she may do so. If no agreement is reached, whistle signals must be exchanged. This applies on U.S. inland waters generally and has no counterpart in 72 COLREGS.
Authority: Inland Rule 34(h)
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