Which MARSEC level corresponds to increased posture?

• A. MARSEC I
• B. MARSEC II
• C. MARSEC III
• D. MARSEC IV

Answer: (B)

Increased posture means security measures are raised beyond normal operations to deter and detect threats, but it isn’t yet an all-out emergency. That level of alert is MARSEC II. At MARSEC II facilities and vessels implement enhanced access controls, more frequent security patrols, additional screening of people and cargo, and quicker sharing of security information among port stakeholders. This stage sits between normal operations (MARSEC I) and the higher, more restrictive steps of MARSEC III, with MARSEC IV reserved for emergency conditions after an incident.