Who has the authority to change MARSEC levels?

The authority to change MARSEC (Maritime Security) levels lies with the U.S. Coast Guard or a designated national authority. This is established as part of the broader maritime security framework to ensure that changes in threat levels are assessed and managed at a national level, reflecting the seriousness of security risks in maritime operations. The U.S. Coast Guard, being the federal agency responsible for maritime safety and security, is equipped with the necessary intelligence and resources to make informed decisions regarding MARSEC adjustments.

This approach ensures a consistent response across all ports and vessels, maintaining a unified security posture and allowing for appropriate resources and measures to be deployed in response to the perceived threats. The role of other entities, such as the local port authority, the Company Security Officer, or the onboard captain, is typically in support of implementing the changes dictated by the national authority rather than making those decisions independently. This delineation of authority helps in maintaining clarity and order in maritime security operations during varying levels of threat.