486.—(1) The provisions of this Part of this Act with regard to naval courts on the high seas and abroad shall apply to all sea-going ships registered in the United Kingdom (with the exception, F205[…], of fishing boats exclusively employed in fishing on the coasts of the United Kingdom) and to all ships registered in a British possession, when those ships are out of the jurisdiction of their respective governments, and where they apply to a ship, shall apply to the owners, master, and crew of that ship.

(2) For the purpose of the said provisions an unregistered British ship shall be deemed to have been registered in the United Kingdom.