Question 2525 Deck General

The correct answer is C) United States Coast Guard. The trim and stability booklet for a commercial vessel is required to be approved by the United States Coast Guard. This is because the Coast Guard is the regulatory authority responsible for ensuring the safety of commercial vessels, including their stability and trim characteristics. The trim and stability booklet provides critical information about the vessel's loading conditions and must be reviewed and approved by the Coast Guard to ensure the vessel's safe operation. The other answer choices are incorrect because the National Cargo Bureau, the Society of Naval Architects and Marine Engineers, and the International Maritime Organization are not the regulatory authorities responsible for approving the trim and stability booklet for a US-flagged commercial vessel.