(1) Where any sums mentioned in section 40 are owing in respect of any ship or aircraft, any officer authorised by the General Manager may with such assistance as he or she considers necessary enter such ship or aircraft and may arrest the ship or aircraft and the furniture, fixtures and equipment, and may detain it until the said sums are paid.
(2) Where, after such arrest, such sums remain unpaid for a period of 7 days an officer authorised by the General Manager may cause the ship or aircraft and the furniture, fixtures and equipment thereof arrested to be sold, and out of the proceeds of such sale he or she shall retain the amount necessary to meet the expenses of the detention and sale and shall after paying the amount of any sums which are owing to the Authority, deliver the balance to the agent.
(3) Where any ship or aircraft in respect of which the sums mentioned in section 40 are owing and have not been secured as provided in section 42 leaves a port and enters or is in any other port, then such ship or aircraft may be dealt with as if such sums so owing and not secured as aforesaid were sums owing in respect of such other port.