Question 157Navigation General

70% to pass

If within 500 yards (460m) of a Northern Right Whale you are lawfully obligated to _______________.

A stop the vessel and sound repeated blasts on the ship's whistle to scare the whale away
B slow to bare steerageway until the whale swims away
C turn away from the whale and leave at full speed
D turn away from the whale and leave at slow speed
AI Explanation

The correct answer is D) Turn away from the whale and leave at slow speed. This is the correct answer because under the US federal regulations, vessels are required to move away from a North Atlantic right whale at a slow, safe speed if they find themselves within 500 yards of one. The regulations prohibit vessels from approaching within 500 yards of a right whale, and if this distance is inadvertently breached, the vessel must depart the area at a slow, safe speed while maintaining a parallel course to the whale. This minimizes the risk of collision or disturbance to the protected marine mammal. The other options are incorrect because A) stopping and sounding the whistle is not the required action, B) slowing to bare steerageway may not provide enough distance, and C) leaving at full speed could potentially harm the whale.

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