Rules of the Road · Inland-Specific Provisions
Under the Inland Navigation Rules, what is the 'danger signal'?
- AThree short blasts
- BFive or more short and rapid blasts✓ Correct
- COne prolonged blast repeated at intervals
- DTwo prolonged blasts followed by one short blast
Explanation
Inland Rule 34(d) defines the danger signal as five or more short and rapid blasts on the whistle, the same as 72 COLREGS Rule 34(d). It is sounded when the intentions of another vessel are not understood or when doubt exists about the sufficiency of action being taken.
Authority: Inland Rule 34(d)
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