Subject to paragraph (2) every Board shall enforce and execute these Regulations and shall exercise its functions through the medical officer and such other officers as it may authorise in that behalf, and shall make such inquiries and take such other steps as seem to it to be necessary for securing the proper exercise of those functions.

Any two Boards may agree that one of them shall undertake the enforcement and execution of the whole or specified provisions of these Regulations in the area of the other provided that they first obtain the approval of the Department to the terms of the agreement.

The area in which a provision of these Regulations is enforced and executed under an agreement made under paragraph (2) shall be deemed to be the area of the Board which enforces and executes it.

Where an agreement under paragraph (2) enables a Board to enforce and execute the provisions relating to ship sanitation certificates in the area of another Board, an authorised officer of the Board shall have authority to issue or amend a ship sanitation certificate in the area of the other Board.