The instructions for rescue boats and liferafts on an OSV must be approved by the __________.

Correct Answer: Option D — Coast Guard

46 CFR 133.150 requires that all instructions, maintenance manuals, and operational procedures for lifesaving equipment, including rescue boats and liferafts on Offshore Supply Vessels (OSVs), must be reviewed and approved by the Coast Guard to ensure they meet federal safety standards and are consistent with the vessel's Certificate of Inspection.