Inflatable boats have become an integral part of outdoor activities, fishing and hunting, providing access to the most secluded bodies of water. Among the huge variety of models, boats with an acronym occupy a special place. NDMAIt is the length of 240 centimeters (or 2.4 meters) that often becomes the “golden mean” that allows two adult passengers to comfortably accommodate with a minimum set of equipment.
The main advantage of such models lies in their versatility: they are easy enough to transport in the trunk of a passenger car and at the same time have excellent driving qualities. BAT 240 It's not just an inflatable rubber bucket, it's a fully-fledged floating vehicle that can withstand the waves and gusts of wind, and unlike hard plywood models, the whole structure is a single inflatable balloon, which has a significant impact on weight and assembly speed.
You don't need the special skills or physical strength of an athlete to prepare such a vessel for launch. Modern materials, such as reinforced PVC, provide high strength and resistance to puncture. In this review, we will discuss in detail the design features, advantages over competitors and nuances of operation that will help you make the right choice.
Design features of the NDLD model
abbreviation NDMA It stands for "inflatable floor Day Threaders," which means that instead of a rigid plywood or aluminum flooring that needs to be assembled and disassembled, an inflatable structure is used, and the bottom is made up of several compartments separated by internal partitions, which provides added security: even if one of the cylinders breaks down, the boat will stay afloat.
The key element of rigidity here are inflatable stringers, longitudinal cylinders that run along the sides at the bottom. When pumped to high pressure (usually 0.8-1 atmosphere), they create a rigid plane resembling a ski, which allows the vessel to go more easily to plane and better keep its course by cutting the wave, rather than slapping it flat on the bottom, as is the case with models with a simple inflatable floor (ND).
⚠️ Warning: Do not pump the inflatable floor above the manufacturer's recommended pressure, especially in hot weather. The air inside the cylinders expands when heated, which can cause seams to rupture or deform the structure.
The boards of these boats are also divided into independent compartments, which is the safety standard for all high-quality inflatable vessels. reinforced PVCIt's a grid of polyvinyl chloride, which is made up of several layers of polyvinyl chloride, and it's a grid of synthetic threads that gives the material tensile strength, so that the boat doesn't stretch under load.
When choosing, pay attention to the density of PVC fabric. For fishing and hunting, the density of 750 to 1150 g / sq.m. is considered optimal, which provides a balance between strength and weight of the product.
Advantages and disadvantages of inflatable floor
When choosing between a hard floorboard boat and a NDND model, it's important to weigh the pros and cons. The main advantage of an inflatable floor is that it's lightweight. If you often have to drag a boat alone, wearing heavy plywood and sleigh will be tedious. BAT 240 It weighs an average of 20 to 30 kg depending on the density of the material, which allows even fragile girls or adolescents to manage it.
The second important advantage is comfort: the inflatable floor is soft, you can sit anywhere without fear of getting wet or freezing, rigid boats often have to use special seats or linings, and the lack of rigid elements speeds up the assembly process: you don't have to waste time inserting sleds and fixing them, just pumping the cylinders.
However, the design has its drawbacks, which should be known in advance:
- 🛶 Less stiffness at higher speeds: when entering planing with a powerful motor, the bottom can bend (“play”), which reduces efficiency.
- 🌡️ Temperature dependence: In the cold, PVC becomes stiff and the pressure in the cylinders drops, requiring constant pumping.
- 🔧 Difficulty of repair: Breaking down the bottom part requires more complex repairs in the field than replacing a separate floorboard board.
Despite these disadvantages, for cruising and fishing in calm water, the benefits of NDNDM outweigh, especially when you consider that modern production techniques allow you to make the bottom hard enough to confidently hold the wave.
Materials and density of PVC
The durability of your craft depends on the quality of the material. boats of NDND 240 The numbers that indicate density (e.g. 750, 850, 1150 g/sq.m.) indicate the weight of one square meter of fabric. The higher this figure, the stronger the boat, but the heavier it is.
For models 2.4 meters long, which belong to the light class, manufacturers often use fabric density of 750-850 g / sq.m. This is enough for use on lakes, rivers with moderate currents and in the coastal zone of the seas. The use of denser material (1,150 g / sq.m.) will make the boat “unkillable”, but will add an extra 5-7 kg of weight, which is noticeable when carrying.
| PVC density | Boat weight (approximately) | Recommended use | Resistance to puncture |
|---|---|---|---|
| 750 g/sqm | 18-22 kg | Calm water, fishing | Medium |
| 850 g/sqm | 22-26 kg | Rivers, small waves | High. |
| 1150 g/sqm | 28-35 kg | Hunting, stony shores | Very high. |
It's important to pay attention not only to density, but also to the number of layers. A high-quality material consists of 5-7 layers, including UV protection coatings and special additives to prevent rotting and fungal formation. Cheap analogues can have fewer layers, which reduces their resource.
How do you check the quality of the stitches?
Notice how you connect the parts. The best thing is hot glue with welding, cold glue can dry over time, especially when the temperature changes, and ask the seller to show the inside of the seams, which should be smooth, without bubbles or unpatched areas.
transom plate and engine installation
Unlike fully inflatable tubes, the transom (stern part where the motor is attached) in NDND boats always remains rigid, a prerequisite for reliable engine fixation, the transom plate is made of moisture-resistant plywood, often coated with fiberglass or special varnish, and is glued into the cylinder.
For a length of 240 cm, a transom is usually provided for motors with a capacity of up to 5-6 horsepower. However, some reinforced models can withstand 8-horsepower units. It's important to rememberAnd the power of the motor not only affects speed, but also the load on the transom, and if you install an engine that's too powerful, you risk tearing the transmolina plate off the inflatable tubes.
The height of the transom is another critical parameter: Standard height is 380 mm or 400 mm (15 or 16 inches) – this corresponds to the lower unit of most two-stroke and four-stroke outboard motors. If the transom is too low, the motor will start to “grab” air, if too high, water resistance will increase.
- 🔩 Mounting of the motor should be carried out by rods that are tightly pressed against the surface of the transom.
- 🛡️ To protect against impacts on the bottom or stones on the lower part of the transom is often installed metal or plastic bracket (gate).
- 💧 After each operation, be sure to dry the transom niche to prevent plywood from stratifying.
⚠️ Warning: Never leave a boat with its motor mounted on shore under the scorching sun unattended. Heating the air in the cylinders can increase the pressure so that the transom will deform or burst.
For a boat with a length of 240 cm, the best choice will be a 3-5 hp engine, which will provide a speed of 15-20 km / h and save fuel.
Operation and maintenance of the boat
And boat NDNDM 240 You've been in the service of this for years, and you have to follow the rules of operation, and PVC, although it's a very durable material, is a very delicate material, and the main enemy of inflatable boats is sharp objects and improper storage, and always check the water entrance for snags, broken glass or sharp stones before you go down.
The pumping of the boat is better done by specialized foot or electric pumps with a pressure gauge. The use of car compressors is possible, but requires extreme caution: it is easy to pump cylinders, especially in heat. The pressure in the cylinder should be uniform; pumped side when loaded can cause a shift in the center of gravity.
After every fishing or walk, the boat must be washed with fresh water, especially if you have been swimming in the salty sea. The sand and salt act as an abrasive, gradually destroying the protective layer of PVC. Drying is mandatory: a wet boat packed in a bag is the perfect environment for mold and unpleasant smell.
☑️ Preparation for winter storage
Keep the vessel straightened or slightly deflated, away from heaters and direct sunlight, the optimal storage temperature is from -10 to +30 degrees Celsius, regularly check the condition of the valves and seams, especially before the start of the new season.
Comparison with analogues and final choice
The inflatable boat market is saturated with offers, and the 240 cm model is one of the most popular. NDND competition is made up of high-pressure inflatable floor (HDB) boats, where the bottom is pumped up to 1 atmosphere, becoming rigid as floor. NDNDB wins them in weight and assembly speed, but can yield in rigidity on high wavelength.
When choosing a particular model, pay attention to the availability of additional options: removable switches, liner cable (for safety), holders for fishing rods and anchor rift. All these little things significantly increase the comfort of operation. It is also worth clarifying the warranty period and the availability of manufacturer's service centers in your region.
In conclusion, boat NDNDM 240 It's a smart choice for those who value mobility and convenience, perfect for pair fishing, dog walks or family outings, and the right care and maintenance will make it your safe companion on the water for years to come.
Can I use the 240 boat at sea?
Yes, but with limitations, boats of this size are suitable for coastal zones where the wave height does not exceed 0.5-0.7 meters. Going to the open sea in a small inflatable vessel is dangerous because of the risk of rapid changes in weather conditions and the lack of navigation equipment.
How many people can comfortably fit in a 240 cm boat?
The optimal load is two adults of average size. A third passenger (such as a child or a dog) is possible, but this will reduce the load capacity and reduce driving performance. For three adults, it is better to consider models from 280 to 300 cm.
Do I need to register the boat 240 in GIMS?
Under current Russian regulations, small vessels weighing more than 200 kg (in running order) or with an engine of more than 8 hp (5.88 kW) are subject to registration. Since the weight of the boat 240 cm is usually 20-30 kg, and engines are often less than 8 hp, registration is most often not required if the total weight does not exceed the limit.
How to properly seal a puncture in the field?
Use the repair kit that comes with the boat. The puncture site needs to be degreased, cleaned with fine sandpaper, glued to both surfaces (boat and patch), let dry for 10-15 minutes, then pressed hard and warmed with a hairdryer or put under load. Full polymerization takes 24 hours.