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Maritime security (MARSEC) levels

​​​​There are three maritime security (MARSEC) levels

  • the International Ship and Port Facility Security (ISPS) code

During periods of elevated security risk, the MARSEC level may be increased. This requires maritime industry participants to implement additional security measures.

MARSEC 1 - Default security level

MARSEC 1 is the default level at which ships, ports and offshore facilities normally operate. This level requires all maritime industry participants to maintain the minimum appropriate

MARSEC 2 - Heightened risk of a security incident

MARSEC 2 indicates there is a heightened risk of a security incident. Ships, ports and offshore facilities and associated maritime industry participants must implement appropriate additional protective security measures. They must maintain these measures for a period of time.

MARSEC 3 - A security incident is probable or imminent

MARSEC 3 applies when there is a probable or imminent risk of a security incident, even though it may be not possible to identify the specific target. Ships, ports and offshore facilities and associated maritime industry participants must implement further protective security measures. They must maintain these measures while the incident is probable or imminent.

Find out more about the ISPS Code and MARSEC levels​

Find out more about the ISPS Code and maritime security levels.