Reserve and Plan

A Passenger's Guide to Marine Security Regulations

MARSEC Security Levels

Nationally, threat levels are assigned by Transport Canada Marine Security (TCMS).

MARSEC signMARSEC stands for Marine Security. MARSEC levels are designed to easily communicate pre-planned responses to increased threat levels.

  • MARSEC Level 1 — Appropriate security measures under normal operating conditions.

  • MARSEC Level 2 — Increased security measures maintained for a heightened security threat or incident for a limited period of time.

  • MARSEC Level 3 — Additional security measures when a security threat or security incident is probable or imminent.

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