Which MARSEC Level requires additional measures during increased threat periods?

MARSEC Level 2 is established specifically to address situations where there is a heightened risk of a security incident. This level requires the implementation of additional protective measures beyond those in place at MARSEC Level 1. During MARSEC Level 2, various steps such as increased patrols, enhanced surveillance, and more stringent access controls may be required to deter potential threats and safeguard maritime assets. The intent is to proactively reduce the possibility of an incident occurring due to the identified increased threat levels.

MARSEC Level 1, in contrast, typically reflects normal conditions with standard security measures in place. MARSEC Level 3 represents a situation where a credible threat is imminent, requiring the most extensive security operations and immediate protective actions. MARSEC Level 0 is not a valid operational state within the MARSEC framework as it suggests a lack of any security measures, which would not be applicable to any operational context that requires vessel security.