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GSK Exit Exam • Set 10 Question 23 of 30

What sound signal is made by a vessel in restricted visibility when making way through water?

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Direct Answer

Option A: One prolonged blast at intervals of not more than 2 minutes

COLREGs Rule 35 dictates that a power-driven vessel making way through the water in restricted visibility must sound one prolonged blast at intervals of not more than two minutes. This signal alerts other vessels to its presence and movement, preventing collisions when visual contact is obscured by fog.

All Options

A
One prolonged blast at intervals of not more than 2 minutes (Correct Answer)
B
Three short blasts
C
Two prolonged blasts every 2 minutes
D
One short blast every minute

Detailed Explanation & Context

COLREGs Rule 35 dictates that a power-driven vessel making way through the water in restricted visibility must sound one prolonged blast at intervals of not more than two minutes. This signal alerts other vessels to its presence and movement, preventing collisions when visual contact is obscured by fog.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • General Ship Knowledge (GSK).

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