The Patrol Boat, River or PBR became one of the most successful weapons systems used in Vietnam
Specs
31'11" long, 11'7" wide, and 9'9" high above the water line. it displaced nearly nine tons loaded, drawing two feet of water.
Powered by two turbocharged Detroit Diesel 205 HP, V-6 marine engines, driving a pair of Jaccuzzi 14jy water jetdrives.