You are steaming in the open ocean of the North... - USCG Navigation General

You are steaming in the open ocean of the North Pacific between the Aleutian Chain and Hawaii. A warning broadcast indicates that an earthquake has occurred in the Aleutians and has generated a tsunami that is predicted to hit Hawaii. What action is necessary for the ship's safety?

A Calculate the tsunami's ETA at your position and turn to a course that will head into the Tsunami.

B No special action as tsunamis are inconspicuous in the open ocean

C Securely stow all loose gear, check deck lashings, and prepare for extreme rolls.

D Prepare for sudden, high-velocity wind gusts from rapidly changing directions.

AI Explanation

The correct answer is B) No special action as tsunamis are inconspicuous in the open ocean. This is the correct answer because in the open ocean, tsunamis are not easily detected and do not pose an immediate threat to a ship's safety. Tsunamis have very long wavelengths and low wave heights in the open ocean, making them essentially invisible from the ship. Turning the ship to head into the tsunami or preparing for extreme rolls is unnecessary, as the open ocean conditions will not significantly impact the vessel. The other options, such as stowing gear or preparing for wind gusts, are not appropriate responses to an open ocean tsunami warning.

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Question 709Navigation General

You are steaming in the open ocean of the North Pacific between the Aleutian Chain and Hawaii. A warning broadcast indicates that an earthquake has occurred in the Aleutians and has generated a tsunami that is predicted to hit Hawaii. What action is necessary for the ship's safety?

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