46 C.F.R. § 169.686 Shore power.
Title 46 - Shipping
If a shore power connection is provided it must meet the following requirements: (a) A shore power connection box or receptacle and a cable connecting this box or receptacle to the main distribution panel must be permanently installed in an accessible location. (b) The shore power cable must be provided with a disconnect means located on or near the main distribution panel.
Title 46: Shipping
PART 169—SAILING SCHOOL VESSELS
Subpart 169.600—Machinery and Electrical
Electrical Installations Operating at Potentials of 50 Volts or More on Vessels of Less Than 100 Gross Tons
§ 169.686 Shore power.

