(1) The prohibition in regulation 71(1) is not contravened by providing a ship with access to a port if -
(a) a port entry direction has been given in relation to the ship under regulation 73 (movement of ships), or
(b) the access is needed by the ship in a case of emergency.
(2) The prohibition in regulation 71(2) is not contravened by the entry into port of a ship if -
(a) a port entry direction has been given in relation to the ship under regulation 73, or
(b) the entry is needed by the ship in a case of emergency.