Question 961 Rules of the Road
90% to passBOTH INTERNATIONAL & INLAND While underway in a fog, you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could be sounded by all of the following EXCEPT which vessel?
A
Towing astern
B
Fishing with trawls
C
Not under command
D
Being towed
AI Explanation
The correct answer is D) Being towed. According to the International Regulations for Preventing Collisions at Sea (COLREGS), the signal of one prolonged blast followed by two short blasts is used by vessels that are towing astern, fishing with trawls, or not under command. However, this signal is not used by a vessel that is being towed, as the vessel being towed would not be sounding its own whistle signals. The other answer choices (A, B, and C) are all correct scenarios where a vessel would sound the one prolonged blast followed by two short blasts, but a vessel that is being towed would not be the one making this sound.
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