STCW Regulation 1/10 allows a flag State to permit a person holding an appropriate and valid certificate issued and endorsed by another STCW Party to serve (other than as radio operator) on its ships for up to 3 months if it has not yet been endorsed by the flag State as being recognised for service on its ships.
In such a case, documentary proof that application for endorsement has been submitted to the flag State must be readily available (for flag State or port State control inspection). (This regulation allows employers to move seafarers between ships of different flag States.)
