X38 Combat Cat.
The Combat Cat is a revolutionary stepped-hull high-speed power catamaran design, configured for military, patrol or SAR use. It offers superior sea-keeping, efficiency, speed and safety in all operating conditions. The Combat Cat is designed to offer multiple mission profile capabilities with speeds of up to 40 knots per hour, using twin outboards. It is ideally suited for rapid response, amphibious deployment of commandos or regular patrol work. Offering significantly less cost and risk than other high value patrol or combat assets it can provide covert striking power against critical targets, as well as protecting inshore and off-shore resources and assets... It can be equipped with enhanced features for special warfare operations, or used for reconnaissance, surveillance, law enforcement, counter-piracy, medical evacuations and rescue operations. This cutting-edge exclusive design incorporates stealth characteristics to minimise radar detection in hostile operating conditions. The Combat boat will have a crew of 4, and is capable of carrying an additional 10 - 12 fully equipped troops.
The foredeck area has a sunken gun-well, suited for installation of a forward/side facing main gun-point, for M240 7.62 calibre, M-60, 7.62, 12.7 mm or 40mm grenade launchers. Two large deck hatches and a folding ladder ensure fast and direct access forward, for amphibious assaults and beach landings. The cabin accommodates a Captain/Navigator, helmsman, engineer and gunner, while troops are accommodated in restrained transport seats in the hulls. The stern area of the boat has space for 2 side / rear facing light machine guns and an aft deck in the centre suitable for boarding, or for diving and recovery operations.
The X38 Patrol Catamaran, features forward facing windows, which increases the effective cabin space, and reduces glare and heat build-up in the cabin.
With speeds of 40 knots with twin 300 hp outboards, this cutting-edge Swedish design is the result of many years of ongoing research. It has radical longitudinal steps that reduce hull resistance when planning. The boat actually rides on 4 planning surfaces which reduce in size as the boat speed increases and the boat rises higher out of the water. This results in a boat that has a stable, level ride that makes it into a superior arms platform. The catamaran design provides very low draft, enabling beach landings and access to river estuaries and areas with shallow water that normally cannot be reached with conventional craft. The high tunnel clearance minimises wave slapping and the additional drag caused by attached water.
Hand-laid composite GRP (fibreglass), with cored sandwich panels. The hull is made of multi-directional fibre glass layers, with additional strengthened stringers. The balsa and closed-cell high density foam cores increase panel stiffness and reduce the weight usually associated with solid GRP boats. This offers great strength and robustness and maximises hull integrity in the event of a collision. All exterior decks and the gun-well are self-draining.
ENGINES AND PROPULSION
For simplicity of maintenance and operation the boat is powered by outboard motors, using two motors and counter-rotating propellers (other engine configurations are also available). Stainless steel propellers come as standard with the larger size Suzuki engines.
STEERING AND ENGINES CONTROLS
The steering system is hydraulically operated and the gear shift and throttle controls are genuine parts matching the brand of engine selected. All controls are clearly visible and accessible.
LENGTH 11,40 m.
BEAM 4,59 m.
DRAFT 0,85 m.
DRAFT with engines raised 0,50 m.
DISPLACEMENT 6.200 kg* (Dry weight with 2 x 300 hp).
FUEL CAPACITY 1.000 litres.
SPEED 40 Knots*.
16 - 20 Persons*.
* Depending on model and options
COMBAT BOAT 90H.
Specification - CB 90 H
The general arrangement shows a typical high-speed chine form hull, with reverse sheer and a narrow 1-man landing ramp forward. The aft 25% of the hull, behind an insulated watertight bulkhead, is dedicated to the machinery consisting of two 460 kW Scania DSI 14 diesel engines driving KaMeWa FF water jets. A cabin with seating for 20 troops, together with their equipment, occupies the mid-body of the craft. The wheelhouse "module" is splinter protected and located between the troop compartment and the bow ramp landing area. The space accommodates the helmsman to starboard and the CO/navigator to port in a compact, cockpit type, layout with an extra chair in the center line for an instructor/troop commander.
The weapon fit comprises a 12.7 mm machine gun (or a 40 mm grenade launcher) carried on a ring mount aft of the wheelhouse and a double 12.7 mm mounted in front of the helmsman’s position. The twin mount is fixed in traverse and aimed by pointing the craft - hence the elevation and fire controls are incorporated in the maneuvering levers at the helmsman’s position. Additionally, the CB 90 H can also carry 2.8 ton of mines or the modified Hellfire-type RBS 17 SSM system.
Prototype and serial construction
The prototype contract required Dockstavarvet to do all the strength calculations and dimensioning as well as all engineering and construction drawings on the basis of the FMV project design and in close o-operation with a joint user/buyer project group. The first trails with CB 801, only 10 months after contract award, in September 1989, were an immediate success with the boat fulfilling all requirements by broad margins. The system test period was cut from twelve to six months and Batch 1 (twelve boats) serial production started in September 1990.
For Batch 2 Dockstavarvet, as lead yard, teamed up with Swede Ship Marine as a cooperating partner for the construction of all boats with even numbers and has so far received orders for 63 + 30 + 40 units bringing the total number in the RSwN up to 147 units, operating as Strb 801 - 947. Deliveries were completed in October 2003. The boats are deployed in four Amphibious Battalions forming the backbone of the new Amphibious Corps, RSwN.
Advanced logistics down to nuts and bolts
The boat is built in a fully developed serial production system employing six workstations with a capacity to deliver one new unit every 3rd week. The combination of timing, advanced logistics and a skilful production team, with very a close and tight relationship between CAD engineers and the production people, is enhanced by an ISO 9001 QA system. All boats undergo a comprehensive testing program before delivery.
Performance dependability, and excellent maneuverability, together with dedicated training and support, are the cornerstones of every component of the Combat Boat system.
Future development of CB 90 XXX weaponry
The standard manually operated 12.7 mm MG can be replaced with stabilized remote controlled weapons for the ring mount gun position, even of a higher caliber. Stabilized fire control and launcher arrangements for the RBS 17 missile system and the twin barrel 12 cm AMOS mortar system are possible future improvements currently under development to further enhance of the flexibility of the CB 90 concept.
Transportation of Rapid Deployment Amphibious Task Force
One of the very important characteristics of the CB 90 H is its low profile. Not only does it project a small target area and a low radar signature, when loaded on a standard low loader the boat, with a total height of less than 4.5 meters, can be transported anywhere over land, on RoRo vessels and even by air!
The Swedish Amphibious Corps has used this to its advantage when forming a rapid deployment, go-anywhere amphibious task force. Dockstavarvet has assisted by designing and delivering a system of slings, cradles, wagons and lashing material for a variety of transportation modes.
Length, OA: 14.90 m
Length, WL: 3.85 m
Displacement: 18 tons
Engine power: 2 x 600 kW WATERJET PROPULSION
Speed: 45 knots
PT. LUNDIN KEMBANGKANLAH X38 COMBAT CAT BOAT DENGAN TEKNOLOGI COMBAT BOAT 90H !!!