Article 39 Security for chargesI1

The Harbour Authority may require any person who is liable, or intends to become liable, to pay charges to the Harbour Authority, to deposit with its collector, or to guarantee, such sum as is, in the opinion of the Harbour Authority, reasonable having regard to the amount of the charges.

Where a person so required fails to deposit or guarantee the sum of money required, the Harbour Authority may, within the area of jurisdiction, detain the vessel in respect of which the charges have been or will be incurred until compliance with the requirement or until the charges are paid.