CB90-class fast assault craft

Combat Boat 90
Class overview
Builders	Dockstavarvet, Gotlandsvarvet,
Operators	See Operators
Preceded by	Tpbs 200
Cost	CB90 HSM: SEK 22.22 million (2017)[1] per unit
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 m (49 ft) 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 CB90 HSM: 1 × Saab Trackfire RWS

Stridsbåt 90 H(alv) (Strb 90 H; CB90) is a class of fast military assault craft used by several countries after being originally developed for the Swedish Navy by Dockstavarvet. Its name means Combat Boat 90 Half; the 90 refers to the year of acceptance (1990) and Half refers to the fact that it can carry and deploy a half platoon of amphibious infantry (18 men)^[2] fully equipped. 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 low 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.

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 Norway (as the S90N), Greece, Mexico (as the CB 90 HMN), the United States (as the Riverine Command Boat), and Malaysia.