As we have noted earlier, I believe there is a need to validate the Coast Guard’s ability to forcibly stop a medium to large vessel being used as a terrorist weapon. To do that the .50 cal., Phalanx 20mm, 25 mm, 57 mm, and 76 mm ought to be tested to confirm their ability to penetrate the side of a substantial ship, and go on to penetrate the cylinders of a truly large diesel engine (they can go to over 30 liters per cylinder).

(U.S. Navy photo by Mass Communication Specialist Seaman Leonard Adams/Released)

The Navy is restarting its SINKEX program. Perhaps they could be persuaded to allow some controlled testing, with the objective of developing doctrine with regard to effective ranges and choice of ammunition.