Question 3177 Deck General

The correct answer is B) 12 hours. The regulations state that a holder of a credential as Master of towing vessels may work each 24 hours for a period not to exceed 12 hours. This is in accordance with the work hour limitations set by the U.S. Coast Guard to ensure the safety of maritime operations and prevent fatigue-related incidents. The other options are incorrect because 6 hours is too short, 18 hours is too long, and 24 hours would exceed the regulated work hour limit for this credential.