approved by AMSA-depending on the circumstances, either a temporary crewing permit or a specific exemption may be granted.There are a number of situations in which a vessel may be operated with less than the minimum crewing. Can a vessel be operated with less than the minimum crewing? The outcomes of this evaluation must be documented in the safety management system (SMS). Can a vessel be operated with minimum crewing?Īppropriate crewing may be the same as minimum crewing if the risk assessment carried out by the owner determines that minimum crewing is adequate to eliminate or minimise all risks. Minimum crewing is the minimum number of certified and uncertified crew, including the master, applicable to a vessel based on length.