An Assault Boat is a boat utilized by combat soldiers for making a landing as part of combat operations, and which is paddled and is light enough to be carried by several men, or else is fitted with an outboard motor for hi-speed operation and may not be man portable.
The American Storm boat was an 8 man (6+2 crew) hi speed Assault Boat with a 55 HP Outboard Motor, designed to beach at speed, thus allowing the soldiers on board to "Storm the Shore".
Overview of the differences between British and American Storm and Assault Boats: Section 8. Comparison of River Crossing Equipment, From the Engineer chapter of A Military Encyclopedia Based on Operations in the Italian Campaigns, 1943-1945  
1. Assault Boats:
- a. British Canvas Boats. (The Goatley boat)
- (1) Easily portable (Could be carried open by four men).
- (2) Easily maneuvered in the water when loaded.
- (3) Easily damaged in transit by rough handling.
- (4) Not easily repaired.
- b. U.S. Plywood Boat, M-2.
- (1) Not so easily portable.
- (2) Easily maneuvered in the water, loaded or empty.
- (3) Not so easily damaged in transit (boats "nest").
- (4) More easily repaired.
- (5) Served dual purpose (i.e. making infantry support rafts and expedient assault boat bridge).
- (6) Much noisier in use with non-rubber shod personnel.
- c. Conclusions:
- (1) The American pattern assault boat was decidedly more robust and had the great advantage of dual purpose. However, the British boat proved itself perfectly adequate for its primary task which did not require great durability.
2. Storm Boats:
- a. British Storm Boat.
- (1) Heavier to carry across country.
- (2) Would carry heavier load (6 pounder or jeep though latter a top heavy load).
- (3) Carried ten men, but with a lower speed.
- b. American Storm Boat.
- (1) Carried by 6 men (plus 2 for motor).
- (2) Would carry up to 1500 lbs with very little reduction in speed.
- (3) Carried 7 men (above crew) at maximum speed.
- (4) Was the faster boat; would beach at full speed.
- c. Conclusions:
- (1) For assault crossing of personnel the U.S. boat carried fewer men but got them across the river and in action much faster.
- (2) For cargo carrying, British boat carried a greater load but at a slower speed.
- Landing Craft Rubber Small
- Landing Craft Rubber Large
- Rigid Raider
- Mk 6 Assault Boat
- Combat Rubber Raiding Craft
- Goatley boat
- A Military Encyclopedia, Based on Operations in the Italian Campaigns, 1943-1945. @www.milhist.net by web.archive.org capture February 11. 2005
- A Military Encyclopedia Based on Operations in the Italian Campaigns, 1943-1945 @Google Books