The Mariah Typhoon 22/20 is a fully amphibious hovercraft capable of carrying 15 tonne payload or 80 passengers or combination of both, plus 2/3 crew.
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2 x MAN V10 Series liquid cooled diesel engines, driving 2 x3.5 metre diameter 6 bladed-ducted Kevlar/carbon solid cored fans power the craft. 2 hydraulic generate lift driven centrifugal fans.
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4000 litre Diesel. 4 fuel tanks are positioned at 4 “corners” of the hull, and are interconnected with a manifold. A high-speed transfer pump can transfer fuel between all tanks to aid trim.Tank heaters are fitted for extreme cold conditions.
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- Tachometer
- Oil pressure
- Oil Temperature
- Low Oil
- Voltmeter
- Amp meter
- High engine temperature
- Alternator failure
- Fuel depth and fresh water depth.
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- 8” LCD radar
- GPS
- Remote searchlight
- Navigation lights (USCG approved)
- 25/5 watts Icomm VHF Radio
- Silva 150F flush mount magnetic compass
- Binocular Silva marine 7x50 floating (2 sets)
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CO2 Drench combined with strategically placed Aqueous Film Forming Foam (AFFF) Extinguishers, command controlled, remote fuel shut off.
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The superstructure is constructed from E-glass/Kevlar/Carbon PVC cored panels.
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1 x standard door as well as a sliding door, giving a total opening of 2.5 meters. These are fitted to both sides of the main cabin area to facilitate access of personnel and equipment. The bridge has seating for 3 as standard with room for Chart table. Windows are high impact laminated glass, ballistic glass is optional. The bridge forward windows have wipers and de-icers. A hatch is positioned aft of the bridge to access the equipment placed on the superstructure roof and to act as an escape hatch. Optional Bow door to allow for vehicle access to the cargo bay. Inner water tight doors fitted to comply with the code.
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The Hull structure is Kevlar/Carbon composite strengthened with Kevlar/Carbon PVC foam cored longitudinal and transverse frames. The lower air chamber void is filled with polyurethane foam for additional impact strength and buoyancy. The bottom skin is ridged and curved in to the bow for greater tensile strength, and to reduce wave impact.
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2 Kevlar/Carbon blades stainless steel shaft centrifugal fans, hydraulic driven.
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6 bladed, 3.5 metre diameter Ducted Fans (VPIM) (Hoffmann). Kevlar/Carbon reinforced composite construction Lloyds approved. Stainless Steel Hubs and Drive Shafts.
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- Lloyd’s Rules for Classification of Naval Ships
- IMO High Speed Craft Code (2000 Edition)
- Lloyd’s Rules and regulations for the classification of Special Service Craft
- Lloyd’s code for the Lifting Appliance in a Marine Environment
- British Hovercraft Safety Rules
- Lloyd’s Guidance Notes and Requirements for the Classification of Air Cushion Vehicles.
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- MAN V10 D2940 LE403 EDC Series. 1050HP
- Onan 30DGGC-L Series AC Generator
- Fuel consumption at cruise – 165 litres per hour
- Fuel consumption at max power – 235 litres per hour.
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- Recommended maximum wave height for passenger operation – 1.5 metres (+0.5 metres light ship).
- Maximum wind conditions – 35 knots (close quarters).
- Maximum Range: 600 Nautical Miles at cruising speed.
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- Maximum Speed: 60 knots or better
- Economic Cruise: 35 knots
- Obstacle clearance: 1.2 metres
- Creeping capability: <6 degrees
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4 Rudders mounted aft on the duct, constructed from Kevlar/Carbon/PVC cored
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2 elevators Kevlar/Carbon/PVC cored mounted in the duct. Computer controlled with manual override.
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The skirt is “Bag and Finger” type constructed from heavy-duty polyester rip-stop nylon, synthetic rubber coating. Anti plough in feature in the front bag section. The skirt finger sections are changeable on hardstand, without having to jack the vessel. Optional hydraulic rams can be fitted to the hull for jacking purposed.
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The main engines are mounted on a sub-frame for ease of removal for major maintenance. Rubber isolation mountings are incorporated to reduce vibration. The fans are driven by Poly-chain GT Kevlar toothed belts. The sub-frame and fan ducts can be removed as a unit or separately.
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- The water tank is positioned centrally. Emergency dump valve fitted. A tank heater is fitted.
- Grey/Black Water Tank Pump out valve fitted.
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The control systems are a “fly by wire type”. The steering yoke controls the rudders, also fitted to the steering handles are the engine speed controls. A dead man shut off switch is incorporated in the instrument panel in case of emergency. Foot operated clutch for main fans. Computer controlled elevator with manual override. The lift fans speed controls are Electro-hydraulic.
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All systems duplicated 24V DC/220V AC. 220VAC generated underway, 24V-battery backup. 27 KVA Onan Generator. 8 multi cell, series-connected batteries. 2 x 120 Amp alternators, powered by main engines. All duplicated wiring to Lloyds specifications, with appropriate circuit breakers and standard coded wiring.
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Reinforced roof section of the bridge to allow for the mounting a 50 cal remotely operated machine gun.
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4 x 25 person Life raft capsules are mounted on each side of the deck of the craft. One anchor windlass and cable locker installed forward, with towing bits. Eight-mooring/fender strongpoint around hull. Stainless steel, lowerable guardrails and stanchions all round. 8 lifting positions, with slings.
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All sea trials and initial training to be carried out in Westernport Bay, Victoria, Australia. Additional training to be carried out in the crafts operational waters.
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The craft is fitted with a ballast system that is extremely clever. It determines the craft is level in both planes. Both longitudinal and laterally. It uses a microprocessor to do the calculations, and uses the excess fuel that the craft is carrying as ballast. It will automatically transfer the required amount of fuel ballast, using high volume pumps, to the appropriate area of the craft to maintain the craft’s trim and attitude. This minimizes the need to be careful when loading the craft. The craft has been designed to carry in excess of its own weight in cargo thus making the craft extremely versatile.
Based on the current design weight of this craft, when it is full of fuel, a crew of two and ready for deployment it has a draft of 190 mm when settled in the water. When the craft is fully loaded with its maximum payload the craft only has a draft of 320mm. Due to the hull shape design it is an extremely stable platform when in displacement mode.
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The crew’s quarters are equipped with shower, toilet and separate bedrooms. The galley is equipped with refrigerator, cooking appliance and table and seating for 4 persons.
There is seating in the cabin of the craft for 68 passengers. With the bow door option the cargo back can hold two HumVee vehicles.
With the removable roof panels a 20-foot shipping container can be lowered into the cargo bay for transport.
The wide bay doors either side of the craft provide for emergent lifesaving.
The crew quarters can provide a bed for an emergency patient, if necessary.
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