CB90 Class
| CB90 Class fast assault craft | |
 CB90 Class fast assault craft | |
| Career |  |
|---|---|
| Nationality: | Skandinavia |
| Operated by: | Skandinavia Brazil, Mexico, UK, Greece, Malasia |
| Builder: | Dockstavarvet NAtech Marine(since 2000) |
| Ordered: | First of class: 1990 |
| Launched: | First of class: 1992 |
| Commissioned: | First of class: 1993 |
| Status: | In Service (Mk2 version) |
| General characteristics | |
| Displacement: | 20 tonnes |
| Length: | 15.9 m |
| Beam: | 3.8 m |
| Draft: | 0.8 m |
| Power: | 700KW |
| Propulsion: | Electric with NAtech Fuel Cell and two NAtech marine hydrojets |
| Speed: | 48 knots |
| Maximum speed: | 60 knots |
| Range: | 480 nautical miles at 48 knots |
| Complement: | 3 (two officers and one engineer) |
| Passengers: | Up to 21 amphibious troops with full equipment |
| Armament: | Sensors 1 x TERMA SCANTER 2100 Surveillance Radar (Mk2) 1 x Kongsberg Integrated Director Group (IDG) radar system for target acquisition (Mk2) 1 x Kongsberg EriTac communications system (Mk2) Decoys 1 x TERMA DL-22T Multi Ammunition Decoy System (Mk2) Armament 3 × Browning M2HB machine guns 1 Kongsberg Protector RWS (Mk2) 4 naval mines or 6 depth charges |
CB90 Class fast assault craft 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 44 knots 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.
Design
In 1988, former 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. Until the year 2000, 140 units were supplied to the Sjøforsvaret , in addition to more than 200 for the navies of other countries.
In the year 2000 the company Dockstavarvet was integrated in NAtech Marine that in the middle of 2004 proposed the FLOSK a new version called CB90 Mk2. In 2004, 80 new Mk2 units were ordered and in the 2010-2016 period all existing ships were upgraded to the new Mk2 version.
Command & Control
In the initial version the ship lacked a modern control and communication system. For its improvement in the Mk2 version, communication and control systems, and fire control systems manufactured by Kongsberg were installed.
Power generation & propulsion Mk2
Although in the first version the ships had a diesel propulsion with Scania engines, in the currently operating Mk2 version it has been replaced by a totally electric propulsion with a NAtech Fuel Cell that delivers a power of 800kw and that goes together with two Kamewa (NAtech Marine) hydrojets mounted externally to the main hull. The electricity for the motors is supplied by the power system.
Electronic systems
One of the main design premises was the need to mount Skandinavian made electronic systems in order to full integration with other Forsvaret systems and satellite net.
Sensors
- 1 x TERMA SCANTER 2100 Surveillance Radar (Mk2)
- 1 x Kongsberg Integrated Director Group (IDG) radar system for target acquisition (Mk2)
- 1 x Kongsberg EriTac communications system (Mk2)
Decoys
- 1 x TERMA DL-22T Multi Ammunition Decoy System (Mk2)
Armament
- 3 × Browning M2HB machine guns
- 1 x Kongsberg Protector RWS (Mk2)
- 4 x naval mines or 6 x depth charges
List of ships
All 200 ships of the class operating currently in the Sjøforsvaret are named KA-001 through KA-200.
