Sever Phantom 850K

//Sever Phantom 850K

Sever Phantom 850K






The new cargo version of the model of the Phantom 850K Airboat was requested by our customers, the essence of which was the creation of a powerful, extra-lifting, convenient and comfortable water equipment. This model differs from the “Phantom 750K” with the size of the front cargo platform – it is increased to 3.8 m in length and 2.27 m in width, and a reduced cabin, which can accommodate 5 people comfortably.

The fundamental difference between the “Phantom 850K” and other models of airboats with rigid cabins produced by “Sever” is the arrangement of the doors: firstly, it is not one, installed in the middle of the cabin, as in the previous “Phantoms”, there are two of them, and they have an automobile type arrangement: on the right and to the left of the driver’s and passenger seats. This arrangement of doors facilitates entry and exit of people from the cabin and makes it possible to distribute the load on the platform close to the cabin. All the side windows of the cabin are sliding.

Double noise insulation provides sound comfort. The front seats of the driver and the passenger are foldable, soft and comfortable. Under the seats are spacious lockers. To the right and to the left of the cabin doors are side steps with a non-slip HYDRO TUFT coating.

“Phantom 850K” – the first airboat with an inflatable hull with a load capacity of over three tons and the possibility of transporting a bulky cargo of such weight on the front platform. For the sake of experiment we loaded the car “Niva” onto the boat platform and carried it on the water at a speed of 48 km / h in the mode of gliding.

This impressive cargo version of the Sever airboat is perfect for both commercial organizations and government agencies who need serious water technology for long-distance cargo transportation, and a warm cabin with several heating options will allow the Phantom 850K to be operated in various climatic conditions at any time of the year.

Taking into account the purpose and specificity of this cargo model of the aircraft, the bottom of the “Phantom 850K” is protected by scales of thickness not 3 mm, but 5 mm from material PE8000. The front loading platform has a high bead with reinforced guard rail. An electric winch is installed on the bow of the boat.

The configuration of the Sever airboat can be changed and supplemented at your discretion, taking into account the purposes of their operation.


The design of the boat is a combination of an all-welded aluminum hull, which is a reliable foundation of the ship, and an inflatable body located under it, which in turn is a kind of shock absorber for softening impacts when moving on obstacles protruding from the water or ice mounds. It is the inflatable body that takes over all the destructive bottom impact loads, absorbs the impact and, after passing through the obstacle, restores its original shape.

The inflatable boat hull is made of high-strength synthetic fabric with a double-sided polymer coating of PVC with the addition of thermoplastic polyurethane. Applied fabric is environmentally safe, wear-resistant, has high climatic and strength characteristics.

The bottom of the boat is protected by polymer scales, which adequately withstand both temperature changes and mechanical impacts. Scales are polymeric plates, each of which is attached with a cord to the bottom of the boat overlapping each other, in general forming a multi-stage protection of inflatable cylinders. When moving along boulders protruding from the water or ice mounds, each plate is elastically deformed and bends, damping (damping) and evenly distributing the load throughout the bottom of the boat. Each scales, in addition to the protective function, performs the role of a transverse version and ensures high speed performance for the aerodrome.

A bulwark with a loose bar along the entire perimeter is a side protection of the boat. The water on board flows into the scuppers – special barred holes in the aluminum casing. Cylinder pumping valves are located in easily accessible places throughout the boat’s hull.

The rigid welded cabin is an aluminum structure with two frontal, four side and two rear windows, with two swing doors to the right and to the left. All “Triplex” glasses are tinted with thermal film. The side windows are sliding.

Interior trim as standard – carpet, but any options are possible: leather, wood, etc.

The front loading area has a high reinforced double-row guard rail, with the possibility of fastening the cargo line for it. An electric winch can be installed on the nose.  The deck in the cabin has a non-slip polymer coating. The cargo platform is covered with a moisture-resistant non-slip plywood.

The standard equipment of the boat includes: two soft chairs to the left and right of the doors of the cabin, a solid soft seat behind the seats, an all-welded fuel tank with a capacity of 400 liters under the solid seat, a glove compartment in front of the passenger seat, a dashboard with a steering column, “Zenit” heaters, Eberspacher Airtronic, two batteries, interior lighting with yacht LED lights, rear-view mirrors.

In an additional configuration, the installation of an electric winch, a lighting headlamp, a transparent sunroof on the roof is provided.

In the rear part of the airboat there is a propeller-driven unit, which is a single assembly unit consisting of an aluminum all-welded fence for the screw and a longitudinal-transverse motor tar, on which an engine is fixed using shock-absorbing silent blocks. The engine is equipped with a reduction gearbox, on the flange of which the air screw is fixed. Four vertical keel (steering) controls are located behind the screw. Batteries are installed in front of the fence in special plastic boxes.


The engine “Toyota / Lexus 3UR-FE – 388 hp” is installed on the aerodrome “Phantom 850K”.

The Toyota 3UR-FE engine is a 32-valve V-shaped 8-cylinder with a volume of 5700 cm³, with an aluminum cylinder block, with pressed cast iron sleeves, with two aluminum GS, with a DOHC gas distribution system with Dual VVT-I. Cooling system – liquid, forced. The timing gear and pumps are a toothed belt. Electronic throttle and electronic ignition system, with separate coils per cylinder. Power – 360/388 hp

At present, work is underway on this model with a diesel engine V 4.2 liters. 370 hp


Drive from the engine to the propeller is carried out through the lowering, single-stage, cylindrical, helical gear reducer. The gear housing is made of high-strength aluminum alloys. The gears undergo chemical-thermal treatment and rolling, have high wear resistance and strength. The connection to the motor shaft is via an elastic coupling that is integral with the flywheel.


1. Inflatable hull of a boat made of high-strength PVC fabric (cylinders and bulwarks)

2.The welded aluminum body of the power plant with a rigid cabin and attachments under the inflatable hull of the boat

3.Driver on longitudinal-transverse frame

4.Weld-welded aluminum protection of the propeller (fence)

5. Air screw 6-blade

6.Vertical keels / steering wheels (4 pcs.)

7. Bottom protection (high-molecular polyethylene PE-8000 – 5 mm.)

8. Control panel with steering column and steering wheel

9. On the control panel: the ignition switch, the throttle control handle (gas), the emergency shutdown button with the check, the tumblers of the engine and on-board system control (the switch for switching the heater, the headlights, the navigation lights, the wipers), cigarette lighter, a control of engine systems: a complex instrument with an hour meter and a tachometer, an engine temperature indicator, an engine oil pressure warning lamp, an engine overheating warning lamp and battery charging, fuel tank level indicator , two buttons breakers “weight” engine-indicator light.

10. Two soft marine seats (driver and passenger), located to the left and right of the cabin doors

11.Shield in front of the passenger seat

12. Soft solid seat with a backrest for passengers, designed for 3-4 people

14. Aluminum all-welded fuel tank for 420 liters.

15. Front, side (sliding) and door tinted glass “Triplex”

16.Filter cleaning of driver’s and passenger windscreens

17. Cockpit floor with non-slip polymer coating

18. Open front deck with a waterproof, non-slip plywood coating.

19. Soft furnish of cabin elements – carpet.

20. Rechargeable batteries (2pcs)

21.Hockey lights

22. Liquid heaters “Zenit” (2pcs)

23.Autonomous heater Eberspacher Airtronic

24.Internal interior lighting (boat cover) (4pcs)

25. Rear mirror

26.Vneslo-strokes or poles


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