MARSEC Level 1
means that the threat of an unlawful act against a terminal or vessel is, though possible, not likely.
MARSEC Level 2
means that an unlawful act against a vessel or terminal is possible, and intelligence indicates that terrorists are likely to be active within a specific area, or against a type of vessel or terminal.
MARSEC Level 3
means an unlawful act against a vessel or terminal is probable or imminent and intelligence indicates that terrorists have chosen specific targets.