Combat Boat 90 (CB90) is a class of fast military assault craft originally developed for the Swedish Navy by Dockstavarvet. Over 225 boats have already been supplied. The CB90H is constructed of aluminum and designed to operate as a fast attack boat, patrol boat and special operations support vessel. Heavy machine guns are mounted in fixed installations, or stabilized and remotely controlled from a monitor in the wheelhouse. The boat can also carry mines or Hellfire missiles, and a gyro-stabilized twin-barrel 12-cm mortar. The boats have a loading capacity of 21 armed soldiers or up to 4.5 tons of cargo. The boat uses two waterjet propulsion units, each powered by a 460 kW diesel engine, developing continuous speeds exceeding 40 knots and high maneuverability. A non-military Patrol Crafts version of the CB-90 can be equipped with twin 550 kW diesels, to cruise at up to 45 knots. Such a high speed interceptor was recently supplied to the Malaysian Customs service. Equipped with two MAN D2842 LE410 main engines, each with a medium duty rating of 810 kW and two Rolls-Royce Kamewa FF-410 with waterjets, the 16 meter boat has a sprint speed of 50 knots and a cruise at 42 kt.
In addition to the many variants in service with the Swedish Navy under the Strb 90 H 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), 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. 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, allows the CB90 to execute extremely sharp turns at high speed, decelerate from top speed to a full stop in 2.5 boat lengths, and adjust its pitch and roll angle while under way.
924 is seen here at Faslane
926 seen here at Faslane
943 seen at Faslane
