The following people are jointly and severally liable to pay port charges payable in respect of a vessel ¾

(a) the owner of the vessel;

(b) the master of the vessel;

(c) each person who is ¾

(i) a consignee, consignor or shipper of goods carried on the vessel; or

(ii) an agent of the vessel,

and has paid or undertaken to pay any charge on account of the vessel.