Patrol Boat, or Patrol Craft, a small, high-speed naval vessel used for antisubmarine warfare, coastal patrol, harbor defense, and river warfare. The patrol boat classification includes motor torpedo boats, motor gunboats, fast patrol boats (successor to the PT boats [torpedo patrol boats] of World War II), and various kinds of river patrol boats. (Exact designations vary from navy to navy.) Patrol boats are generally about 75 feet (23 m) long, displace less than 100 tons, and carry crews of 11 to 25 men. Many are capable of speeds of better than 40 knots. Hydrofoil patrol boats, which travel on underwater foils (similar to aircraft wings) rather than on their hulls, travel even faster.
The Infantry Tank Mark II A-12, or Matilda II, signified a change in Britain's thinking about tanks. Fortunately, this change in tank design came just in time for the start of World War II. Learn about the Infantry Tank Mark II A-12.
The Leopard 1 Main Battle Tank was post-war Germany's first tank designed and built in West Germany. This tank can be sealed and pressurized for use in biological warfare situations. Learn more about the Leopard 1 Main Battle Tank.