46 C.F.R. § 28.230 Compasses.
Title 46 - Shipping
Each vessel must be equipped with an operable magnetic steering compass with a compass deviation table at the operating station.
Title 46: Shipping
PART 28—REQUIREMENTS FOR COMMERCIAL FISHING INDUSTRY VESSELS
Subpart C—Requirements for Documented Vessels That Operate Beyond the Boundary Lines or With More Than 16 Individuals On Board, or for Fish Tender Vessels Engaged in the Aleutian Trade
§ 28.230 Compasses.