Singapore legislation
Regulation 21
of Maritime and Port Authority of Singapore (Port) Regulations
Regulation 21
Vessel to have radiotelephone
Subregulation 1
The owner, agent, master or person-in-charge of a vessel must ensure that there is installed on board the vessel a radiotelephone that is capable of operating in the International Maritime Mobile VHF Radiocommunication Service in the 156-174 MHz Band or such channel as may be specified by the Port Master from time to time.
Subregulation 2
The required radiotelephone must at all times be maintained in an effective working condition and be available for operation on the navigational bridge of the vessel.
Subregulation 3
The master of a vessel must ensure that the specified channel is used only for communications relating to the operational handling, movement or safety of the vessel or (in an emergency) the safety of persons.