Combat Boat 90
Class overview
Builders:	Dockstavarvet, Gotlandsvarvet
Operators:	See Operators
Preceded by:	Tpbs 200
In commission:	1991
Completed:	250–300
General characteristics
Displacement:	13,000 kg (28,660 lbs) Empty, 15,300 kg (33,730 lbs) Standard, 20,500 kg (45,190 lbs) Full load
Length:	15.9 m (52 ft) Overall 14.9 (48') Waterline
Beam:	3.8 m (12 ft 6 in)
Draught:	0.8 m (2 ft 7 in)
Propulsion:	2 × 625 bhp Scania DSI14 V8 Diesel; 2 × Kamewa FF water jets
Speed:	40 knots (74 km/h)
Range:	240 nmi (440 km) at 20 knots (37 km/h)
Complement:	3 (two officers and one engineer) Up to 21 amphibious troops with full equipment
Armament:	3 × Browning M2HB machine guns 1 × Mk 19 grenade launcher 4 naval mines or 6 depth charges

Stridsbåt 90 H(alv) (Strb 90 H, literally: Combat Boat 90 Half; the 90 refers to the year of acceptance and Half refers to the fact that it can carry and deploy a half platoon of amphibious infantry (18 men)^[1] fully equipped) is a class of fast military assault craft originally developed for the Swedish Navy by Dockstavarvet. In addition to the many variants in service with the Swedish Navy under the "Stridsbåt 90H" designation, the CB 90 has been adopted by the navies of several countries, including Norway (as the S90N), Greece, Mexico (as the CB 90 HMN), the United States (as the Riverine Command Boat) and Malaysia. Additionally, the German Navy plans to equip the Berlin-class replenishment ships with the CB90.^{[citation needed]}

The CB90 is an exceptionally fast and agile boat that can execute extremely sharp turns at high speed, decelerate from top speed to a full stop in 2.5 boat lengths, and adjust both its pitch and roll angle while under way. Its light weight, shallow draught, and twin water jets allow it to operate at speeds of up to 40 knots (74 km/h) in shallow coastal waters. The water jets are partially ducted, which, along with underwater control surfaces similar to a submarine's diving planes, gives the CB90 its manoeuvrability.