Malaysia legislation
Section 20
of Ports And Harbours Ports Harbours And Dues Regulations 2008
Section 20
Every person in charge of a vessel shall comply with the instructions of the port officer, who may order such vessel to anchor or berth in any place he may direct, or prohibit anchoring or berthing in any place at any time, and who may order the vessel to be removed to another place within or outside the limits of the port, and such order shall be carried out by the master with immediate effect.