The modern floating market offers such a wide range that it is easy for a novice boater to get confused in the technical specifications. Inflatable boats They've gone from being simple carpenters to high-tech vessels that can withstand storms and develop decent speed, and the key factor in determining a vessel's behavior on the water is the design of its bottom, which directly affects handling, speed and comfort.
When choosing a model, it is important to understand for what purposes it is purchased: for quiet fishing on the lake, high-speed walks or serious expeditions. PVC materials, used today, have high tensile strength and resistance to ultraviolet light, but it is the geometry of the case that dictates the installation of the device. outboardThe wrong choice of bottom type can lead to increased fuel consumption or even loss of controllability on the wave.
In this article, we will discuss the main types of designs in detail so that you can make an informed decision. Only boats with a rigid or inflatable keel are able to plane effectivelyWhile flat-bottomed models are ideal for calm water, understanding these differences will save you budget and nerves in the future.
Flat-bottomed models with plywood floorboard
The simplest and most affordable option is flat-bottomed boats, whose bottoms are assembled from separate sheets of plywood connected by stringers, a design often referred to as a "book" or a "sandwich" that provides maximum stability in a static position, ideal for those who prefer to fish in plumb or need a flat area to accommodate large amounts of equipment.
But there's also a downside to the flat bottom, and when you go out for the plane, the boat is unstable, it can scour from side to side, and the shocks to the wave can be felt throughout your body. Speed performance Such vessels are limited, and for comfortable movement usually require motors with a capacity of not more than 5-6 hp.
However, for small bodies of water where there is no large wave, this is the optimal solution. Plywood plywood It is easily dismantled, allowing the boat to be folded into the trunk of a passenger car, and the weight of this design is usually minimal, which is important for single anglers carrying equipment alone.
- 🛶 Ideal for calm water and fishing in standing water.
- 💰 The most affordable among all types of inflatable boats.
- 📦 They are compact, but the assembly takes longer.
- ⚖️ They have high stability, but low exchange rate stability.
⚠️ Attention: The flat bottom is not suitable for outdoor water with wind and excitement above 0.5 points, and the risk of loss of control and water overflow under such conditions is critically high.
Low-pressure inflatable floor boats (LDPB)
Technology NDMA The bottom is a single inflatable structure with integrated redanes and keel that is pumped to operating pressure (usually 0.2-0.4 atm), which allows you to get excellent driving performance comparable to hard-keel models, but at significantly less weight.
The main advantage of these boats is the speed of assembly and transportation, so you don't have to carry heavy sheets of plywood and suffer with stringers, just spread the cylinders, pump the bottom and the board, and the boat is ready to go down. Aerodynamic keel perfectly cuts the wave, providing a soft course and stability at high speeds.
But there are some nuances to be aware of: the inflatable floor is more prone to puncture and damage to the rocky bottom or shell than plywood or aluminum. In addition, when you stay in the sun for a long time, the pressure inside can change, which requires periodic pumping. For protection, you often use special mats or choose models with a reinforced bottom.
Choosing a model with NDMAAnd you can see that there's a hump beam around the bottom, which will extend your life, and it's great for 5 to 18 hp engines, and it can go up to 30 to 35 km/h depending on the load.
Hard-boats with aluminum bottom
For those who prioritize reliability and durability, there are models with a single-aluminum bottom, which is not just an inflatable boat, but a hybrid that combines soft sides and a rigid body, and the aluminum sheet can be smooth or with longitudinal redanes, which greatly improves hydrodynamics.
These vessels are virtually impossible to damage when in contact with the bottom, snags or ice, and have phenomenal course resistance and allow you to install engines of greater power than similar in size models with plywood bottom. planing This boat starts at lower engine speeds, which saves fuel.
The reverse side of the coin is the weight and dimensions assembled. The aluminum bottom cannot be folded into an accordion, it is transported in a separate sheet or folded, but still bulky. Transportation This boat is only possible on the roof of the car or in a trailer, which limits the mobility of the angler.
Secrets of Aluminum Bottom Care
Aluminum is prone to electrochemical corrosion when in contact with other metals in salt water. Be sure to use stainless steel or plastic transom wheels and regularly lubricate the mounting sites with anti-corrosion compounds. Also avoid storing a wet-bottom boat in a closed case.
Translation design and power limitations
The tranny is the stern of the boat, and it's the engine that you attach to it, and it's the engine that you can use, and there are two main types of tranny, removable and glued, and the tranny is a board that's inserted into pockets that are convenient to store, but less reliable for powerful motors.
Pluted transmolant It's a continuation of the cylinder, reinforced with plastic or metal linings, and it's the only option for engines over 10 hp, and the transom design has to withstand not only the weight of the motor, but also the propeller's traction and vibration.
It is important to consider the angle of inclination of the transom, which is usually 15 degrees. The wrong canopy of the engine will lead to the fact that the boat will either dig with its nose or raise it too high, losing speed. Altitude adjustment The outboard motor is carried out using holes in the lower unit or special wedges.
| Type of transom | Max power (hp) | Motor weight (kg) | Reliability |
|---|---|---|---|
| Removable (board) | 5.0 | 20 | Medium |
| Pluted (reinforced) | 18.0 | 45 | High. |
| Pluted (extra) | up to 30.0+ | 70 | Maximum |
| Inflatable (without rigid insert) | up to 3.5 | 15 | Low. |
⚠️ Attention: Exceeding the recommended engine power can lead to the transom tearing off and flooding the boat. Always check the product's passport and do not ignore the manufacturer's restrictions.
Materials cylinders: PVC vs Haipalon
Although the subject of this article is about designs, you can't ignore the material that cylinders are made of. reinforced PVC (polyvinyl chloride) This is a five-layer material where the fabric base (frame) is responsible for tensile strength and the polymer layers are responsible for tightness and resistance to external influences.
There is also Hypalon It's a much more expensive and durable material, especially one that is resistant to ultraviolet light and extreme temperatures. But pure Haipalon boats are becoming scarcer, and often under that name, they sell mixtures of materials. PVC The density of 1100 g / sq.m. is the best choice.
When choosing, consider the quality of the seams. They can be glued or welded. Welding is considered more reliable because it eliminates the stratification of materials over time, but a quality adhesive seam with the right technology lasts for decades.
When buying a used boat, be sure to check the seams for bundling ("mustache"). If a strip of material departs from the valve or the angle of the seam, the tightness of the boat is questionable, and repairs can be expensive.
Criteria for selection and outcome recommendations
The choice of a particular model depends on many factors: the number of people in the crew, the type of reservoir, the way you store and transport. If you fish alone on small lakes, you will suit a compact two-seater boat with a plywood bottom and a 5 hp engine.
For lovers of high-speed driving and large water spaces, boats with a high-speed speed are indispensable. NDMA They provide comfort, dryness and speed, and if you're planning a major expedition with overnight stays and heavy loads, you should look at models with a hard aluminum bottom.
Don't forget about security. anchor-rimWith the help of liners and quality rod holders, it is not only pleasant to be on the water, but also safe to be on, always carry a remix and pump, even if you go out on the water near the shore.
☑️ Pre-purchase check
Frequently Asked Questions (FAQ)
Which motor is better to choose for a boat with a length of 320-340 cm?
For boats of this size (conditionally 3-3.5 meters) is the optimal engine power 5-9.9 hp Motor 5 hp will allow you to confidently plane with one person and light cargo. If you plan to transport two adults or heavy loads, it is better to consider 8-10 hp, but be sure to check the maximum power specified by the manufacturer of the boat.
Can I keep a boat assembled in winter?
You can store the boat assembled (with inflated cylinders), but only in a heated room with a constant temperature. PVC becomes fragile in the cold, and any careless movement can lead to cracks. In a garage without heating, it is better to store it in a deflated form to avoid pressure drops and condensation inside the cylinders.
What is the difference between the boats "Nyrok" and "Fregate"?
These are popular brands that use different approaches. Frigate often uses NDNDT technology and focuses on speed and seaworthiness. Diver (and similar budget brands) more often offers classic plywood solutions, relying on availability and ease of repair. The choice depends on the priority: speed / comfort or price / minimalism.
How often should I pump a boat with NDND in the heat?
In hot weather, the pressure in the cylinders increases. If the boat is in the sun, the pressure can exceed the norm, which is dangerous for seams. It is recommended to lightly burn the air when overheating or use an awning. You need to check the pressure before each outing, especially if the boat slept at a different temperature.
A well-chosen boat is a balance between your physical ability (weight assembled), operating conditions (wave, wind) and budget. Don't chase size unless you plan to use its potential.