An assault boat is a boat used for landing in combat, specifically for inland waters. Their lightweight construction allows for them to be carried by multiple men on foot. They can either be paddled or fitted with an outboard motor for high-speed operation. Some assault boats can be fitted with small firearms such as automatic rifles. Larger assault boats are used in riverine and littoral water where the boat can easily berth in tight spaces and shallow waters. The length of assault boats is usually 5 to 20 meters and they are constructed from rubber, fiberglass, aluminum, or steel.
The Americans deployed two types of assault boats, the "Storm Boat" and the "M2." The "Storm Boat" was an 8-man (6+2 crew) high-speed assault boat with a 55-horsepower outboard motor designed to breach at speed thus allowing the soldiers on board to "storm the shore". The "M2" was a ten-man boat (8+2 crew) that was paddled.
British
The British used two types of assault boat: a "storm boat" and a lower performance canvas boat known as "The Goatley boat".
Overview of the differences between British and American Storm and Assault Boats