Going out on the water on your own boat opens up completely different horizons for a fisherman, tourist or outdoor enthusiast. inflatable boat with engine Today, it is no longer just a budget alternative to a boat, becoming a high-tech and reliable tool for conquering water spaces. Modern materials and engineering solutions allow you to create boats that are easily transported in the trunk of a passenger car, but still confidently keep the wave in large waters.
Many beginners mistakenly believe that the presence of the motor automatically turns an inflatable boat into an uncontrolled car, but a competent approach to the choice of the engine is not a good idea. sling-sling And weight distribution does wonders. It's important to understand that even the best quality of weight distribution is the best. PVC It requires proper care, safety and, of course, knowledge of navigation, and in this article we will take a look at all aspects of owning a motorized inflatable vessel, from purchase to first descent.
Unlike rowing models, motorized versions have their own design features that can not be ignored when buying. The maximum permissible power of the engine for inflatable boats without steering is strictly limited to 10 hp. according to the requirements of GIMS. Ignoring this rule will not only result in fines, but can also be fatal in a water emergency.
Selection of materials and construction of the body
The basis of durability of any inflatable vessel is the material from which it is made. reinforced polyvinyl chloride (PVC)It's a multi-layered fabric with a synthetic cord, and unlike the older rubber models, PVC is not afraid of ultraviolet, gasoline, oils and rot, making it an ideal choice for use in harsh environments.
When choosing, you should pay attention to the density of the fabric, which usually varies from 750 to 1100 g / sq.m. 1100 g/sqmIt provides better resistance to punctures against rocks or driftwood, but increases the overall weight of the kit. For fishing on large rivers with rocky bottoms, it makes sense to overpay for density, whereas for calm lakes, an easier option will be suitable.
- 🛡️ Reinforcement layer: provides tensile strength and resistance to deformation during pumping.
- 💧 Water-repellent impregnation: prevents the absorption of moisture by the cloth, which excludes the appearance of mold during storage.
- ☀️ UV protection: special additives in PVC protect the material from destruction under the influence of direct sunlight.
The bottom design also plays a critical role in the behaviour of the motored boat. NDMA (low pressure) provides excellent hydrodynamics and rigidity, allowing for high speeds, but requires more thorough drying after each fishing. On the other hand, plywood or aluminum solder bottom is easier to collect and dry, but it adds extra pounds and can shift during heavy operation.
Criteria for the selection of an outboard motor
Choosing an engine is no less important than buying the boat itself. The engine power must match the load capacity and length of the vessel, otherwise you risk an unstable structure that is prone to yawing or even tipping. For two-seater boats up to 3 meters in length, the optimal choice will be engines with a capacity of 2-5 hp, which allow you to reach speeds of up to 15-20 km / h.
An important parameter is also the type of control and ignition system. Two-stroke engines They're traditionally popular because of their lightness, ease of maintenance, and ability to work on a mixture of gasoline and oil in any position. Four-stroke analogues are heavier and more complex, but they're quieter, more economical and more environmentally friendly, which is especially appreciated when you're on long transitions or trolling.
When the engine is installed turret The height of the lower unit suspension must be strictly observed: if the screw is too deep, water resistance increases and efficiency decreases; if too high, cavitation and air capture will begin, which will lead to overheating and loss of traction.
When buying a used motor, be sure to check the compression and condition of the candle, and also ask the seller to demonstrate work on water or at least on a barrel to make sure that there is a cooling trickle.
And the fuel system is also important. Small capacity often uses built-in tanks, but long-distance hikes are better served by connecting a 12-litre or more remote tank, which will save you from constantly refueling and the risk of splashing gasoline inside the cockpit.
Table of correspondence of boat length and engine power
In order not to make a mistake with the choice of the power unit, it is recommended to be guided by the proven ratios of the dimensions of the vessel and horsepower. Exceeding the recommended values can lead to the destruction of the transom or loss of controllability at high speed.
| Boat length (m) | Load capacity (kg) | Recommended power (hp) | Maximum speed (km/h) |
|---|---|---|---|
| 2.70 – 3.00 | 250 – 350 | 2.5 – 5.0 | 15 – 25 |
| 3.20 – 3.60 | 400 – 500 | 5.0 – 9.9 | 30 – 40 |
| 3.80 – 4.20 | 600 – 800 | 15.0 – 20.0 | 45 – 55 |
| 4.50 and more | 900+ | 25.0 – 40.0 | 60+ |
This table is recommended, as the actual speed and stability depend on the shape of the cylinders, the type of bottom and the distribution of the cargo. Always check the technical data sheet of the specific product, where the manufacturer indicates the maximum permissible loads.
Assembly and preparation for launching
Properly assembling a boat is key to your safety and longevity, starting with laying the boat on a flat surface, free of sharp objects and debris, and avoiding PVC sand from inflating between layers of PVC is important, as it works as an abrasive and can damage the material.
The cylinders should be pumped until the operating pressure specified in the instructions (usually 0.2 – 0.25 atm) is reached. Insufficient pressure will lead to deformation of the body under the weight of the engine and passengers, and excess in hot weather can cause joints to rupture due to air expansion.
☑️ Checklist before descent
⚠️ Attention: Never leave a fully pumped boat in direct sunlight unattended. The thermal expansion of air can critically increase the pressure in the cylinders, so in heat it is recommended to put a little air or use pressure relief valves.
The engine is very careful to install, and the engine is attached to the transom with the help of coils, which must be tightened evenly and reliably. lower unit submerged in water, otherwise the work "dry" will instantly put the cooling pump out of action.
Operation and management on water
The motorized inflatable boat has its own specifics, different from rigid vessels, because of the high sailing of cylinders and low weight, the structure is highly susceptible to wind. In lateral winds, the boat can be very demolished, so it is important to constantly adjust the course and keep your hand on the tiller.
Particular attention should be paid to excitement. Inflatable boats They have excellent buoyancy and softness, but on a steep wave they can become unstable. You should move at an angle to the wave (forstag or beidewind), avoiding movement perpendicular to the ridges, which is fraught with rollover.
What to do when punctured on water?
If you puncture in deep water, don't panic. Modern boats have several independent compartments. If one cylinder is broken, the rest will keep the boat afloat. Make sure you get to shore with a spare cylinder or paddles. If you break through the bottom, try to make the boat as light as possible and paddle slowly to shore.
When maneuvering, remember the inertia of the propeller. A sharp reset at high speed can cause the boat to turn side to wave or wind floating objects and algae onto the propeller. All movements with the tiller should be smooth and predictable.
GIMS rules and legal aspects
Owning a motorized watercraft imposes a number of legal obligations on the owner. Under current Russian legislation, small vessels weighing more than 200 kg (with an engine) or with an engine power of more than 8 kW (about 10.88 hp) are subject to registration with the GIMS. However, the availability of category M rights (for motor boats) is required regardless of the engine power if you drive the vessel yourself.
Each vessel must be equipped with life jackets according to the number of passengers, anchor, scoop and repair kit, and the absence of these elements can be grounds for a fine when checking documents by a water inspector.
There are also restrictions on movement near bathing areas, hydraulic structures and at night without navigation lights, and compliance with these rules is not just a formality, but a necessity that ensures the safety of all participants in water traffic.
Registration of the boat is mandatory if the total weight with the engine exceeds 200 kg OR the engine power exceeds 10.88 hp (8 kW). In other cases, it is enough to have documents confirming ownership.
Care, storage and conservation
The durability of a inflatable motorized boat depends on the quality of its care after operation. After each release, especially in salty or polluted water, the vessel must be thoroughly washed with fresh water and dried. Wet fabric is the ideal environment for the development of fungi and mold, which destroy the structure of PVC.
Store the boat should be spread out or half-folded in a dry, cool room, away from heating appliances and direct sunlight. The optimal storage temperature is from -20 to +35 degrees Celsius. Regularly check the condition of the valves and seams, if necessary, treating them with special protective compounds.
- 🧼 Cleanup: Use only a soft sponge and soap solution, avoid aggressive chemicals and solvents.
- 🌬️ Drying: Dry the boat in the shade, avoiding sand getting inside the valves.
- 📦 Packaging: fold the boat carefully without creating sharp creases in the same place.
The engine also requires seasonal maintenance: changing candles, checking fuel filters and preserving the fuel system for the winter. Proper preparation for the winter season will allow you to start the engine in the spring from the first derg and immediately go fishing.
⚠️ Attention: For long-term storage (more than 1 month), be sure to drain the fuel from the carburetor or use a fuel stabilizer. The remaining gasoline is oxidized and forms a resinous plaque that clogs the jellyberries and disables the carburetor.
Frequently Asked Questions (FAQ)
Can I use a PVC boat in winter or in the cold?
Using PVC boats in subzero temperatures is possible, but requires extreme caution. The material in the cold becomes tough and brittle, so any impacts on the ice or sharp edges can lead to cracks. It is recommended to use special winter modifications of the boats and keep them warm before getting on the water.
How often should the cylinders be pumped during operation?
In hot weather, the pressure in the cylinders can increase, and they, on the contrary, need to be a little fired. In cold weather or when the water cools (for example, at night), the pressure drops, and may need to be pumped. Check the rigidity of the cylinders before each exit and at long parking lots.
Which gasoline is best used for a two-stroke engine?
For most modern two-stroke engines, it is recommended to use AI-92 or AI-95 gasoline with the octane number specified in the instructions, the main thing is to observe the correct mixing proportion with oil (usually 1:25 or 1:50) and use quality oil for water engines labeled TC-W3.
Do I have to register a boat if the engine is more powerful than 10 hp, but I do not put it?
If the boat is operated without a motor or with an engine of less than 8 kW (about 10.88 hp) and the total weight of the kit is less than 200 kg, registration with the GIMS is not required.