USCG Exam Practice · Leeway allowance in plotting
Under the Inland Navigation Rules, when a power-driven vessel is leaving a dock or berth, she shall sound:
- AThree short blasts
- BTwo prolonged blasts
- COne prolonged blast✓ correct
- DOne short blast
Why C is correct
33 CFR §83.34(g) requires that a power-driven vessel leaving a dock or berth shall sound one prolonged blast. This is a distinct signal from maneuvering signals and is not an indication of intended direction of movement.
Cited:33 CFR §83.34
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