23.—(1) The several charges which the Council are for the time being authorised to demand, take and recover under this Order or any other enactment relating to the harbour may be demanded, taken and recovered by such persons, at such places, at such times and under such conditions as the Council may from time to time specify in their published list of charges and, in the case of charges payable in respect of any vessel, shall be payable before its removal from the harbour.
(2) Charges in respect of a vessel shall be payable by the owner of the vessel at the time the charges are levied or by such other person as at that time has charge of the vessel.
(3) Where charges may be recovered by the Council from more than one person, the persons from whom they may be recovered shall be jointly and severally liable.
(4) Nothing in section 30 of the Harbours Act 1964 shall require the Council to include in the list of ship, passenger and goods dues to be kept, as required by subsection (1) of that section, charges which have been reduced by virtue of any rebate or compounding arrangement in respect of a due included in the said list.