The ship security assessment (on which the ship security plan was based) should have considered all possible security incidents, including (amongst other things) “unauthorized access or use, including presence of stowaways A non-compliance should be raised with the Company Security Officer, a reassessment should be made, and the ship security plan should be reviewed and possibly revised. Appropriate security measures, as specified in the ship security plan, should be taken while the stowaways are on board. A Declaration of Security should be made on arrival at the next port.