Floating security barrier

A method of floating security that protects a marine structure from unauthorized contact, comprising the steps of:

• a) surrounding the marine structure with a plurality of buoys floating on a water surface and positioned in spaced apart orientation to form a perimeter around a marine structure to be protected, each buoy having a portion that extends above the water surface and a portion that extends below the water surface;
• b) spanning a truss between each pair of buoys and each truss supported by the buoys in an elevated position above the water surface, each truss having an upper end portion and a lower end portion;
• c) connecting each truss to a pair of the buoys with first and second spaced apart connections that are each positioned above the center of gravity of the truss;
• d) hanging a curtain downwardly from each truss, the curtain spanning between the truss lower end portion and the water surface, both of said truss upper and lower end portions being above the water surface;
• e) disallowing vessel travel from a position outside the perimeter to the marine structure with a portion of said curtain that remains above said water surface to define an above water surface barrier between said truss lower end portion and the water surface.