HALO Barrier for Navy port security

Stopping Power | Armed with Science

USS Cole could have used this. There do seem to be alternative sources, not using a proprietary technology. see About Port Security Barriers

Stopping Power: Barrier Technology to Boost Protection at Navy Ports - Office of Naval Research
Navy sources say these barriers offer far greater stopping capacity against speeding attack vessels, require less manpower to operate and could show significant cost avoidances over time compared to existing systems.
“There is a real need for improved security for our sailors and Marines in ports around the world and here at home,” said Hal Oakley, program lead at Commander, Naval Installations Command (CNIC).
 

Marine Security Barriers - Port Security Barriers - Water Security

HALO Maritime Defense Systems offers the HALO™ MARITIME SEA BARRIER a proprietary solution to secure critical assets vulnerable to boat or diver attacks. In a security-conscious world, both government assets– Navy Bases, Navy Ships in Hostile Territories, Airports, Coast Guard Boats and Facilities– and private assets– Ports, LNG Terminals, LNG Tankers, Nuclear Facilities, Oil Rigs and Facilities, Desalination Plants, Pipelines, Palaces, and Cruise Ships– have a real, immediate, and critical need for high levels of protection that is currently unfulfilled.
HALO™ is specifically designed as a Sea Barrier Defense System. Its composites are designed to withstand any sea state, and also withstand the corrosive nature of salt water.  Its Impact Displacement Design not only allows it to handle high impact incidents, but to do so and remain intact, ready for a secondary impact.