We own patent #7,744,313 B2 for its Fixed Security Barrier (FSB™) system, in which a boat’s progress is stopped in milliseconds yet remains fully capable of stopping a second or even a third swarm attack.The FSB barrier is designed to be permanent and installed in place to stop:

  • Fast Inshore Attack Crafts (FIAC)
  • Boat-Borne Improvised Explosive Devices (BBIED)
  • Multiple boat attacks
  • Intruders at full power before, during and after impact
  • Slow speed, heavy tonnage vessels
  • High speed, lower tonnage vessels
  • Underwater penetration

FSB Barrier System

  • Ultimate stopping energy 3.7M ft lbf/5.01 MJ
  • Working stopping energy 1.25M ft lbf/1.69 MJ

Constructed System

  • Piling length determined by seafloor conditions, net height requirements and water depth to maximum of 80 ft (12.38 m).
  • Example: A 60 ft (18.29 m) deep system would require 102 foot-long (31.09 m) pilings as follows depending, of course, on site conditions.
    • Embed in seafloor – 30 ft (9.14 m)
    • Seafloor to surface – 60 ft (18.29 m)
    • Extension above surface – 12 ft (3.66 m)
  • Pilings are generally spaced no more than 100 ft (30.48 m) apart.
  • Net depth and elevation designed according to risk assessment of site conditions, water depth and above water stopping requirements generally beginning at a height of 8 ft (2.44 m).
  • Galvanized or stainless steel mesh nets above water and generally in the intertidal zone.
  • Subject to design, there is no practical limit to the amount of energy the system can withstand under varying wind and current conditions.
  • Pilings and shore connection systems sized for maximum strength.
  • Extensively tested.


  • Low maintenance – Corrosion resistance proven over nearly 10 yrs. of “real-world” operations.
  • Attack resistance – Best resistance to high-energy boat impacts at 3.7M ft lbf/5.01 MJ.
  • Sustainability – Ten-year proven resistance to marine environment permanent stress including weather, sea swells, sea waves, chaffing, marine fouling and sea life.

Expertise and Service

  • Expert installation – teams include divers and marine constructors with over 30 years of experience working with each other.
  • Fosters local partnerships – local sub-contractors join the team when qualified, gaining work skills and technology training.
  • Life-cycle value – team experts provide life-cycle cost estimates to be used in formulating investment and insurance calculations and in selecting the system that meets the customer’s need.

Download the Fixed Security Barrier Fact Sheet

For more information on our Maritime Security Barrier Systems, please click here.