BOTH INTERNATIONAL & INLAND While underway...

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Question 1 of 2066636eeb28f7522a1c51bcf8

BOTH 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?

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Question 1 of 20

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🔍 Key Concepts

• Restricted visibility sound signals in the Navigation Rules • The specific fog signal for a power-driven vessel making way versus a vessel not under command, restricted in ability to maneuver, constrained by draft, sailing, fishing, or towing • The difference between the signal for the towing vessel and the signal (if any) for the tow itself

💭 Think About

• Look up which vessel type uses one prolonged and two short blasts when underway in or near an area of restricted visibility. • Compare the prescribed sound signal for a vessel fishing with trawls and for a towing vessel, and see if they are the same pattern or different. • Consider whether the vessel being towed gives its own fog signal in all cases, and what signal (if any) a vessel not under command must sound.

✅ Before You Answer

• Verify in the Navigation Rules which categories of vessels use one prolonged plus two short blasts in fog. • Check if a vessel being towed is required to sound a different signal than the towing vessel, or may be silent under certain conditions. • Confirm the exact fog signal for a vessel not under command and whether it matches one prolonged and two short blasts.

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