Rigid Raider and Combat Support Boat (CSB)
Watermanship
Boats used by the Corps of Royal Engineers
The Royal Engineers use three different types of boats ranking from the Mk5 Assault Boat to the Combat Support Boat (CSB)
Mk 5 Assault Boat

The Mk 5 Assault boat has an aluminium hull and can either be powered by an outboard motor or paddled using oars. The Mk 5 Assault Boat is taught to all Royal Engineers during their watermanship training, at 3 Royal School of Military Engineering Regiment (3 RSME).
Rigid Raider

The Rigid Raider is a fast patrol craft with as glass reinforced plastic (GRP) hull. It is used for patrolling inland and coastal waterways.
The Rigid Raider comes in two variants the Mk1 and Mk2.
Combat Support Boat (CSB)

The Combat Support Boat is a powerful craft whose main role is to support both bridging and amphibious operations. The CSB is powered by jet propulsion engines, which means it can stop in a very short distance by reversing the flow of water through the jets.