CB90-class fast assault craft
Combat Boat 90
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| Class overview | |
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| Builders: | Dockstavarvet, Gotlandsvarvet |
| Operators: | Swedish Navy, Royal Norwegian Navy, Royal Malaysian Navy, Mexican Navy, Brazilian Army, United States Navy |
| 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: |
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| 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: |
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| Armament: |
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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) 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. Also the German Navy plans to equip the Berlin-class replenishment ships with the CB90.
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.
In 1988, Dockstavarvet won a competition to design and manufacture a replacement for the aging Tpbs 200 class. Two prototypes, with pennant number 801 and 802, were delivered in 1989. After completion of field trials, the Swedish Navy signed a purchase order for 120 boats in June 1990.
In 2002, the Swedish Navy ordered an additional 27 boats of a slightly different type, designated Stridsbåt 90 HS - where S refers to Skydd (protected) as the Strb 90 HS is armoured and features CBRN protection (the whole boat can be over-pressurized) - intended for use in international peace-keeping operations. Apart from the addition of armour, it sports air-condition for deployment in tropical conditions, fuel cooling system, 220V generator and more powerful engines. The manufacturer sometimes refers to the model as the CB 90 HI, where the I probably stands for International.
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Wikipedia