Which entity is responsible for defining the MARSEC Levels?

The Coast Guard and other maritime authorities are responsible for defining the MARSEC (Maritime Security) Levels. These levels are part of a structured approach to maritime security that establishes how various threats are managed in the maritime environment. The MARSEC Levels are determined based on risk assessments, intelligence, and the evaluation of potential threats to the maritime sector.

Maritime authorities, such as the Coast Guard, have the expertise and regulatory authority needed to assess security needs and implement appropriate measures. This involves collaboration with international guidelines, such as those set by the International Maritime Organization (IMO), but the final authority for setting MARSEC Levels lies with national and local maritime authorities.

While shipping companies and local port authorities play critical roles in maritime security by adhering to the regulations and implementing security measures, they do not have the authority to define the MARSEC Levels. Instead, they must comply with the levels set by maritime authorities, which ensures a cohesive and coordinated approach to security across the maritime domain.