The 153-foot long Sentinel-class patrol boat is capable of speeds of 28 plus knots. It is armed with one stabilized, remotely-operated 25mm chain gun and four crew-served .50 caliber machine guns. It has a crew capacity of 22 people and is able to perform independently for a minimum of five days at sea and be underway for 2,500 hours per year. (Illustration courtesy of Bollinger Shipyards)