USCG Exam Practice · Rule 35 — Sound Signals in Restricted Visibility
A pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit and are navigating in restricted visibility while making way. Which fog signal applies to this composite unit?
- AOne prolonged followed by two short blasts at intervals of not more than 2 minutes, because the pushing vessel is engaged in towing
- BOne prolonged blast at intervals of not more than 2 minutes, because the composite unit is treated as a power-driven vessel making way✓ correct
- COne prolonged followed by three short blasts at intervals of not more than 2 minutes, because the pushed vessel sounds the tow signal
- DTwo prolonged blasts at intervals of not more than 2 minutes, because the composite unit is underway but not making way
Why B is correct
33 CFR §83.35(f) states that when a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit, they shall be regarded as a power-driven vessel and shall give the signals prescribed in §83.35(a) or (b). Since the unit is making way, §83.35(a) applies: one prolonged blast at intervals of not more than 2 minutes.
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