USCG Exam Practice · Rule 35 — Sound Signals in Restricted Visibility
A power-driven vessel is underway in fog but has stopped her engines and is making no way through the water. Which sound signal is required?
- AOne prolonged blast at intervals of not more than 2 minutes
- BTwo prolonged blasts in succession with an interval of about 2 seconds between them, at intervals of not more than 2 minutes✓ correct
- COne prolonged followed by two short blasts at intervals of not more than 2 minutes
- DRapid ringing of the bell for about 5 seconds at intervals of not more than 1 minute
Why B is correct
33 CFR §83.35(b) prescribes two prolonged blasts in succession with an interval of about 2 seconds between them for a power-driven vessel underway but stopped and making no way. One prolonged blast applies only when the vessel is making way through the water per §83.35(a).
Cited:33 CFR §83.35(b)
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