A credentialed Master of Towing Vessels may NOT serve as the person in charge of which towing vessel?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 349 GRT towing vessel operating between Florida and Puerto Rico
A Master of Towing Vessels credential carries specific tonnage limitations based on the endorsement scope. Operating vessels over 200 GRT or outside designated coastal/inland limits without proper tonnage upgrades exceeds the legal scope of the credential.
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