The Coast Guard employs a three-tiered system of Maritime Security (MARSEC) Levels designed to easily communicate to the Coast Guard and our maritime industry partners pre-planned scalable responses for credible threats.

In addition to the security measures for MARSEC Level 1 and MARSEC Level 2, at MARSEC Level 3, the facility owner or operator must also ensure implementation of additional security measures, as specified for MARSEC Level 3 in the approved FSP.

2021年6月13日 · MARSEC Level 3 Will include additional security measures for an incident that is forthcoming or has already occurred that must be maintained for a limited time frame. The security measure must be attended to although there might not be …

MARSEC Level 3 means the level for which further specific protective security measures shall be maintained for a limited period of time when a transportation security incident is probable or imminent, although it may not be possible to identify the specific target.

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§ 105.230 Maritime Security (MARSEC) Level coordination and implementation. (a) The facility owner or operator must ensure the facility operates in compliance with the security requirements in this part for the MARSEC Level in effect for the port. (b) When notified of an increase in the MARSEC Level, the facility owner and operator must ensure:

MARSEC (MARitime SECurity) is the North American three-tiered Maritime Security system (alert state). It is used by both Canada and United States. United States Coast Guard designed it to easily communicate to the Coast Guard and the maritime industry pre-planned scalable responses for credible threats.

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.

(d) MARSEC Level 3. In addition to the security measures for MARSEC Level 1 and MARSEC Level 2, at MARSEC Level 3, the facility owner and operator must ensure implementation of additional security measures, as specified for MARSEC Level 3 in the approved FSP. Examples of these additional security measures may include:

MARSEC Level 3 denotes the highest identified risk of a probable or imminent security threat. All ships and ports must enter an emergency response posture, enacting the most stringent protective, deterrent, and incident response measures to secure infrastructure and occupants.