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PARMA Shipyard
Passenger vessel

44 people

PARMA hovercraft for year-round operation on water, ice, snow and in shallow waters.

Vessel parameters

Technical specifications

Final equipment and some parameters are tailored to the route and operating conditions.

Maximum body length, m 17.0
Maximum width (with hanging sections), m 6.0
Cushion height (clearance), m 0.9
Passenger capacity max., persons 42
Minimum crew, persons 2
Payload, t 4.0
Operating speed (on water), km/h 50
Maximum speed (on water), km/h 60
Operating speed (on ice), km/h 50
Fuel capacity, l 750
Operational fuel consumption on water, l/hour 70
Autonomy in terms of fuel reserves, h 12
Safe wave height, m 1.25
Supervision (Commercial operation “sea”) RMRS, 36 passengers, KM*[2] ACV HSC Passenger-A
Supervision (Commercial operation “river”) RKO, 42 passengers, class P+1.2/1.2 hovercraft
Purpose

Model capabilities

The high-speed amphibious hovercraft PARMA 44 (project PM44) is designed to transport up to 4000 kg of cargo or up to 42 passengers. Hovercraft belongs to the class of “passenger” hovercraft and is designed to transport passengers across bodies of water in summer or winter, including with short-term access to the shore. The boat is capable of overcoming smoothed ledges up to 90 cm in height and not smoothed ones – up to 65 cm. The boat is capable of reaching speeds on the water of up to 60 km/h.
Operation is permitted at outside air temperatures from -40ºC to +35ºC and maximum wind speed up to 12 m/s at any time of the year. The vessel can be operated in coastal sea areas A1. Limitations during operation – wave height 3% probability up to 3 points (up to 1.25 m), distance from the shelter site no more than 4 hours at operational speed. When driving on ice or snowy surfaces, operation is permitted on bodies of water of all categories. Operation on any other flat, hard surface, extremely shallow water and swampy surfaces is permitted.

Vessel design

Design and equipment

Hull, propulsion, control systems and operating features.

Cabin

As a standard, the passenger cabin is equipped in the front with two soft passenger seats, including one for the captain.
The cabin provides for the installation of 36-42 passenger seats and a toilet room. The cabin is made of a three-layer structure, the middle layer of which is insulation. The outer layer is made of fiberglass based on polyester resin with fiberglass reinforcing material, coated with colored resin (gelcoat). The middle layer is made of honeycomb slabs. The inner layer is made of fiberglass and laminated plastic.

Engine

The hovercraft is equipped with two KAMAZ Cummins 6ISB 300 engines, each with a power of 300 hp.
Four-stroke six-cylinder diesel engine with an electronic Common Rail fuel supply system, with an in-line arrangement of cylinders and pistons rotating one common crankshaft, with a lower camshaft. The Cummins 6isb 300 engine is designed for installation in medium- and heavy-duty trucks. In the domestic industry, it is used as a power unit for vehicles such as KAMAZ 6460 and 6520. The engine has a closed-type liquid cooling system with forced circulation. The lubrication system is combined: under pressure and splashing.
The rated power of the 6isb 300 engine is 224 kW, which in terms of horsepower is equal to 300 units. This figure, for clarity, is included in the motor markings. The specific power of the 6isb 300 is 0.36 kW per 1 kg of engine weight, and the specific torque is 1.45 Nm/kg.
To increase power parameters, the Cummins power unit is equipped with a VGT turbocharger, which, in addition to its main function, helps save fuel when operating at full power.

For Cummins 6isb 300, the length/width/height are within the range of 1260 mm, 930 mm and 1045 mm, respectively. The weight when fueled is 616 kg, while the weight of the “dry” engine is only 522 kg. The relatively light weight of the engine allows for more efficient use of the lifting capacity of the hovercraft.

Engine oil consumption when operating at rated power (300 hp) is 0.1% of fuel consumption.

Currently, the engine is produced at a Russian plant in Naberezhnye Chelny.

Engine type 4-stroke 6-cylinder Cummins 6ISB 300
Number of engines, pcs. 2
Power, hp. (kW) 300(220) x2
Maximum speed, rpm 2600
Working volume, cubic cm 6700
Fuel system Common Rail
Specific fuel consumption of one engine, g*hp/h 200
Cooling system Liquid
Weight of dry engine, kg 522

The option of replacing KAMAZ-Cummins engines with YaMZ-536 engines with similar characteristics is allowed.

Flexible fencing

The amphibious qualities of the hovercraft are ensured by lifting the body away from the screen by holding the air cushion under the body with a flexible fence. The lift height depends on the speed of the superchargers (engines) and the trim angle.

The hovercraft uses a two-tier flexible fencing scheme with removable elements along the entire perimeter of the lower
tier and with a flexible receiver in the upper.
This scheme allows the removable elements to remain elastic. Those. when passing obstacles, the flexible elements deflect and allow the object to pass underneath them without resisting its influence.
Only the lower segmental tier, which consists of many independent elements, is involved in contact with the surface. Each element is attached to the receiver with four clamps. Replacement is simple and does not require special tools or skills.

Thanks to the constant air flow in the VP, the GO will maintain the ability to move the hovercraft even if all removable elements are lost. GO material is rubberized fabric based on rubber nylon. This fabric allows you to straighten and take a given shape in low temperatures.

The maximum achievable height of the air cushion is about 0.9 m. The height of the air cushion is measured from the supporting hard surface to the bottom of the housing.

Propellers and superchargers

As movers on Hovercraft is equipped with two four-bladed variable pitch propellers in aerodynamic fixed nozzles. The variable pitch propeller support unit and the reverse mechanism are located in the pylons of each nozzle. The material of the propeller blades is a composite of fiberglass with a carbon fiber coating. The rotation angle of the propeller blades is controlled by direction indicators installed in the control panel.
Two twin centrifugal superchargers are provided as air cushion superchargers. Air cushion blowers operate separately, each on its own side. The superchargers are mounted on shafts supported on both sides by self-aligning bearings. The supercharger material is a composite of fiberglass, carbon fiber and aramid.

Separate control of supercharger speeds (n1 and n2) and sectioning of air cushion zones allows you to create different pressures in the left P1 and right P2 halves. This property makes it possible to create an artificial roll, which greatly helps during maneuvers and helps neutralize the effect of side gusts of wind. In case of failure of the engine or supercharger of one of the sides, the jumper between the zones is removed and the flexible fence is filled with air from the working supercharger. The hovercraft can continue to move on one supercharger.

Management

Directional control is provided by turning the steering wheel in the control station and rudders installed in the flow behind the propulsors. Turning the control surfaces provides control torque with the center of rotation in the nose area.

Provision is made for shifting variable pitch propellers from the FORWARD position to the REVERSE position. Shifting is done both jointly and separately using pedals located at the driver’s feet. The separate shift provides control torque with the center of rotation in the stern area.

The propeller speed is controlled, which provides different thrust and creates a control torque with the center of rotation in the stern area. The possibility of hovering on an air cushion at low speeds is provided by installing the propeller blades in several intermediate positions in the range of angles from full forward to full rear. It is ensured that the blade of one propeller is shifted backwards, and the blade of the other propeller is correspondingly shifted forward (work in conflict).

Remote control of the power plant is carried out using levers located on the control panel.

Registration

The hovercraft is designed according to the rules of the Russian Classification Society RKO class “P+1.2/1.2 hovercraft”, class “small category *3”, rules of the Maritime Register of Shipping KM*[2] ACV HSC Passenger-A. This allows you to operate it in the following options:

For personal and official needs without the right of commercial exploitation. Number of seats up to 12 people + cargo. Sailing is allowed – GDP is not higher than “P”. In winter there are no restrictions on ice. Registration with GIMS. Amateur rights.
For passenger transportation on the GDP with the right of commercial operation. Seats up to 42 people. Sailing is allowed – GDP is not higher than “P”. In winter there are no restrictions on ice. Registration with Rostransnadzor. Professional rights.
For passenger transportation MP, GDP with the right of commercial operation. Number of seats up to 12 people + cargo. Sailing is allowed – GDP not higher than “P” or MP 20 miles from the place of refuge. In winter there are no restrictions on ice. Registration with Rostransnadzor. Amateur rights.
A place of refuge is any naturally or artificially protected water area that can be used to shelter a vessel in the event of circumstances threatening its safety. For a hovercraft, this is any area of ​​land where a ship can go, i.e. actually coastal navigation.
“Passenger is an individual who has entered into an agreement for the carriage of a passenger, or an individual for the purpose of whose transportation a vessel charter agreement has been concluded.” Or in other words, the one who paid for the transportation himself or for whom someone else paid for his transportation.

Transportation

Hovercraft can be transported on a special 20-meter trailer without an escort, on a railway platform, on the deck or inside the ship.

Systems

The Hovercraft is equipped with the following systems:
electric (24V, 2 batteries)
fuel (700 liters)
engine cooling
charge air cooling (turbocharger, intercooler)
gas exhaust (rusting)
interior and engine compartment ventilation
trimming (400 liter tanks in the nose and stern)
steering (two groups behind the nozzles of 4 rudders)
fire-fighting

Other

The Hovercraft is equipped as standard with:
life jackets according to the number of passengers
two remote control headlights
eight water-air heaters from different engines
variable pitch propellers VIS
windshield washer and wipers
trim indicator
two on-board diagnostic computers Multitronics (engine speed, voltage, balance fuel in tanks, coolant temperature, errors)
indicator of the angle of attack of the propeller blades
“Fire” indicator in the engine compartment
electric amplifiers VIS
drainage pumps
gullwing doors with a width of at least 850 mm
radio tape recorder, cup holders, glove boxes, cigarette lighter, USB sockets, ashtray and etc.

Engineering consultation

Need expert advice?

Specify passenger capacity, cargo and route conditions. A shipyard specialist will clarify the requirements and recommend a suitable configuration.

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