Motor boat "Oka-4": technical characteristics, reviews

The domestic motor boat Oka-4, whose technical characteristics will be considered further, was produced by the Gorky Aviation Plant. This ship underwent many structural changes before the serial production. From the fourth attempt, a swimming device with a keeled bottom at fourteen degrees and a reinforced cladding was put into production.

Description

The body is made of aluminum riveting method. Boat "Oka-4" specifications is not the best in its segment. The thickness of the outer skin is only 2 mm. For unsinkability, the stern and nasal blocks with foam filler are responsible.

The swimming device is equipped with a removable type folding awning and steering. Provided windshield and soft seats. Under the seats are roomy lockers, the luggage compartment is protected from splashing due to the presence of a fence on the bow deck.

In the submerged part, a pair of fuel tanks is freely placed. As power units, mounted motors are used. The dimensions of the cockpit are 2120/1340 mm. In the serial production, three modifications of the considered brand are known:

1. Standard equipment with a mass of 190 kg.
2. Version with rigid seats weighing 171 kg.
3. Option with strong cans without backs (152 kg).

Oka-4 boat: specifications

Models of the vessel in question with a minimal bundle are much cheaper, which causes the popularity of such modifications among different strata of the population. Below are the main parameters of the technical plan:

• The maximum length is 4.25 m.
• Width / height - 1,48 / 0,77 m.
• Deadlock is 14 degrees.
• Trencher height - 38 cm.
• The curb weight is 190 kg.
• The index of carrying capacity is 400 kg.
• The capacity of passengers is four persons.
• The maximum power of the outboard motor is 30 horsepower.
• The speed at full load on the power unit "Vikhr-M" (25 "horses") - 30,4 km / hour.

The essential keel of the bottom guarantees that the Oka-4 boat will demonstrate good seaworthiness when traveling along large rivers and in the coastal zone of marine reservoirs. In addition, this tool has perfectly proved itself in shallow and calm reservoirs.

Benefits

The vessel in question can be operated with the Neptune-23 hinged engine. This is quite enough for a normal gliding with a crew of four and a weekly supply of provisions. Good seaworthiness, which showed the motor boat "Oka-4", allows you to overcome the excitement on the water to two meters. If you compare a vessel with a similar "KAZANKO-2" class, the latter is inferior in almost all respects.

The fourth "Oka" has a very good layout, capacious lockers, a solid bottom and comfortable seats. Lattice pajols consist of wooden compact sections, which allows them to be easily dismantled, increasing storage space without loss of deadrise.

If desired, you can install additional metal tanks for fuel. This allows you to overcome significant distances without special refueling. The flat-bottomed recess is placed with honey beads, two standard gas tanks hold 20 liters of fuel. At the same time, the smell of gasoline is not felt in the cockpit due to the peculiarities of the boat's design. Things especially prone to moisture are placed under the bow deck, and equipment and tools are located as conveniently as possible, do not occupy a useful place in the cockpit.

Exploitation

As show reviews, after several seasons of operation, there is often a problem with the power unit and the output of the floating craft for gliding. Alternatively, you can install a pair of "Vortices" or power unit "Hi-22", which is more economical in terms of fuel consumption. The boat "Oka-4", the technical characteristics of which are presented above, is designed for maximum power of the power unit within 30 horsepower.

Two-motor installation allows to achieve high-speed advantages and stability in troubled water. If you strengthen the trench, it is possible to equip the ship with a power plant with a capacity of about 45 "horses". For seaworthiness, the vessel in question shows good safety parameters at a speed of 40 km / h (full load). The strength of the case is checked by time and test tests, it withstands impacts of decent force, without deforming. Those who want to save a bit on fuel consumption, experts recommend that the engines Neptune and Moscow be aggregated in pairs. This allows you to go on gliding at a load of 400 kilograms at a speed of about 30 km / h.

Minuses

The boat "Oka-4", the photo of which is presented above, has a number of shortcomings. The main disadvantage is the susceptibility to corrosion of the parts of the longitudinal set. This applies to the gunwale, stringers and longitudinal editions, as well as the backs of the seats. Elements are made of a conventional angle profile, without additional processing from rusting.

As a result of this decision, the dural could become delaminated like a wet plywood, and, according to the owners of the floating craft, the process did not take long to wait. As a preventive measure, it is necessary to permanently clean the problem areas, otherwise corrosion quickly destroys the elements, which then simply need to be replaced by new analogues.

"Oka-4" is a boat (the reviews are listed below), which has another significant drawback. This is a strong spatter when traveling on a collision course under a wave. Since the role of longitudinal eddies is played by longitudinal profiles on rivets, riveted from the outside, the corners crush the counter flow into small sprays, which are ejected forward and wind directed to the windshield. In this case, the protection of the bottom and sides does not cope with them, which leads to water on the deck and into the cockpit. Despite this design feature, the vessel in question received the best seaworthiness and speed qualities in comparison with its closest competitors.

Features

"Oka-4" - a boat, the characteristics of which are discussed above, - is equipped with a windshield without triangular sidewalls. This feature contributes to the fact that the person sitting in front is not protected from flying sprays. It is quite possible to mount additional protective elements yourself. But for this it is necessary to find a quality Plexiglas, and also to adapt mooring ducks. The standard version uses a cast knob type knob that fixes the glass.

Certain shortcomings are also noted in the cockpit layout. In order to get into the engine compartment, the driver will need to step over the front front seat. For the night, you can expand the seats by moving the backs and covers, which is a rather laborious and long process.

Customer Reviews

So, above, we told what the Oka-4 boat has technical characteristics. The owners' feedback allows us to conclude that, in general, consumers are satisfied with the boat. Firstly, the ship has good seaworthiness and high-speed qualities. Secondly, it is distinguished by its strength and stability in the course of agitation. In addition, the boat has a good load capacity and the ability to use various outboard motors up to 30 horsepower.

Among the minuses, users note a high susceptibility to corrosion of certain elements and spraying of the passenger part. However, in combination with an acceptable price, the boat in question is quite competitive in comparison with other analogues having not so high strength and reliability indicators (Moscow, Dnipro, Kazanka).

In conclusion

The Oka-4 boat, the technical characteristics described in the article, is a good swimming means for fishing and tourism. It has good seaworthiness and speed qualities, although it does not lack certain drawbacks. In general, the products of the Gorky Plant named after Ordzhonikidze received worthy estimates of specialists and amateurs, especially in terms of a combination of price and quality.