A conditional or partial exemption may be granted, in exceptional circumstances, for a single voyage outside the sea area for which the vessel is equipped.

The regulations apply to all passenger ships regardless of size and cargo ships of 300 gross tons and upwards.

Ships must carry at least two persons holding a GMDSS Radio Operator's license for Distress and Safety radio-communications purposes.

Ships must have the required equipment inspected at least once every five years .