Which party must ensure that legal work hour limitations (for both officers and crew members), rest periods and regulations governing work on Sundays and holidays are followed when the vessel is in a safe harbor?

Correct Answer: Option B — The Master of the vessel

The Master holds ultimate responsibility for the safety and legal compliance of the vessel, including adherence to work hour limitations and rest periods as outlined in 46 U.S.C. 8104. Even in a safe harbor, the Master must ensure the crew is not overworked, maintaining operational readiness and regulatory compliance.