When choosing a boat for fishing or outdoor activities on the water, beginners often encounter a mysterious acronym in the model name. NDMAThis marking hides key information about floor type and bottom design, which directly affects driving performance and usability.
Understanding that, What does the NDNDN boat mean?It helps you avoid mistakes when buying and choose the best option for specific tasks. The type of floor depends on whether you can confidently stand in one place while fishing, how easy it will be to assemble and transport the boat, and how it will be resistant to punctures. In this article, we will discuss in detail the design features, advantages and disadvantages of this solution.
abbreviation NDMA It stands for "Low Pressure inflatable floor," which means that instead of rigid flooring (plywood, aluminum) or high-pressure inflatable tubes, a special design is used made of durable materials, pumped with air to relatively low pressure, and this bottom is an integral part of the housing, which ensures excellent hydrodynamics and tightness.
Design features and materials
The basis of the design is a multi-layered material, often reinforced with PVC, which forms a sealed compartment. Unlike inflatable keels, which can be a separate element, in the case of NDNDM, we are talking about a single plane on which the seats are mounted and the fisherman stands. Thickness of material It plays a critical role here, as it takes on the main load of passengers and cargo.
Inside the inflatable floor are special stringer They run along the entire body and keep the bottom from over-inflating to the sides, keeping the flat shape necessary for stability, and this engineering solution balances the softness of the inflatable element with the rigidity required for comfortable operation.
⚠️ Warning: Do not try to pump the bottom of the NDND to a pressure higher than the limits specified in the data sheet. Excessive pressure can lead to strain of stringers and rupture of the seams, especially in hot weather.
The connection of the bottom with the sides is carried out by gluing or welding, which ensures high tightness of the seams. valve It's designed to eject excess air, which works automatically when the boat is heated in the sun, and it prevents the structure from rupturing because of the thermal expansion of the air.
Benefits of low pressure inflatable floor
The main advantage of these boats is their transportability, because rigid elements (plywood or aluminum) are completely absent, the assembled boat is packed in a compact bag, making them ideal for fishermen on foot or those who get to the pond by public transport or taxi.
The second important advantage is depreciationThe inflatable floor is great at quenching the shocks of the waves, which makes it more comfortable to be on the water, and unlike the hard floor, there is no risk of getting a bruise on your back when you pass through small ripples, and there is also less noise from splashing water against the body.
It is also worth noting the high degree safetyEven if one of the compartments is punctured (which is unlikely with quality materials), the boat will not lose buoyancy instantly, as the sides and keel remain independent, and the absence of sharp corners inside the cockpit minimizes the risk of damage to the equipment.
- 🎒 Maximum compactness in the transport bag.
- 🌊 Excellent depreciation on the wave and comfort when driving.
- 🛡️ High resistance to mechanical damage to the bottom.
- ⚖️ Equal distribution of the load over the entire area.
Disadvantages and limitations of operation
Despite the obvious advantages, the design of NDND has its weaknesses, which you need to know about before buying. softnessWhen you park in one place under the weight of a person, the bottom can be slit, creating a hammock effect. For active fishing in the style of "jig" or "trolling", where you need a hard support, it can be uncomfortable.
The process of preparing the boat for the launch takes longer than the plywood flooring models. You will need to pump not only the sides and keels, but also the bottom, which requires more effort or a quality pump. In cold weather, the material becomes less elastic, and the folds can take additional time to straighten.
Effects of Temperature on Pressure
When you take the boat out of the warm room, the pressure inside the cylinders and the bottom will drop, which is normal and does not mean that there is a puncture, but if you leave the pumped boat in the direct sun, the pressure will increase, and emergency valves can go off.
Another nuance is that hydrodynamic resistanceSoft bottoms at high speeds can bend slightly under water pressure, creating a so-called bubble, which reduces speed slightly and increases engine fuel consumption compared to hard-keel boats.
⚠️ Warning: When assembling a NDND boat in the cold, avoid sharp material inflections. PVC becomes brittle at low temperatures, and careless handling can lead to microcracks.
Comparison with other types of bottom
To make a final decision, it is worth comparing NDND with other popular options: plywood floor and high-pressure inflatable keel (HDPD). Piolas provide perfect stiffness, but lose in weight and dimensions of the package. NDVD combines rigidity and inflatable construction, but costs more and more difficult to pump.
Below is a comparison table that will help you organize the information and choose the best option for your operating conditions. Pay attention to the weight and type of use, as these parameters often become decisive.
| Characterization | NDND (Low pressure inflatable) | Pyol (Phanera/Aluminum) | NDVD (high pressure inflatable) |
|---|---|---|---|
| Floor rigidity | Medium (soft) | High (hard) | High (hard) |
| Weight gathered | Minimum | Medium/High | Medium. |
| Dimensions of packages | Compact | Overall | Compact |
| Assembly time | Long-term | Average | Long-term |
| Price. | Affordable | Medium | High. |
As you can see from the table, NDMA If you're a priority in the portability and weight category, if you want to put a boat bag in your backpack and get to the subway or train fishing, there's almost no alternative, but if you want to keep the boat in the garage assembled or transported by car, you can consider other options.
Recommendations for selection and assembly
When buying a boat with an inflatable floor, pay attention to the density of the material. 850-900 g/m2Thinner materials can quickly become unusable when actively used on rocky shores or overgrown bodies of water. protector belt on the lower side of the boards.
The assembly process requires a certain sequence, always pumping the sides, then the keel (if there is one), and only lastly the bottom, which allows you to properly distribute the tension and avoid distortions of the structure. 0.2-0.3 atmospheresWhich is much lower than the planes.
☑️ Assembly of the NDND boat
To pump the large volumes of air needed to fill the bottom, it is recommended to use a two-way foot or electric pump. Hand-held "frogs" can take too much time and effort. After pumping, allow the boat to lie down for 10-15 minutes for the material to stretch, and if necessary, pump air to working pressure.
- 🛠️ Use a pump with a pressure gauge to control the pressure.
- ☀️ Check the pressure after heating the boat in the sun.
- 🧼 Wash and dry the boat before packing into storage.
- 🔧 Check the valves regularly for leakage.
Care and durability of the structure
The long life of a NDND boat depends on proper care. After every fishing, especially in salt water or dirty water bodies, the hull must be thoroughly rinsed with fresh water. The sand and salt left in the folds of the bottom act as an abrasive, gradually destroying the protective layer of PVC.
Store the product in straightened form or in free packaging at room temperature. Do not allow storage in a compressed state in the winter, as this can lead to a clog of material and cracks. Regular treatment with special compounds for PVC helps to maintain elasticity and protects against ultraviolet light.
To protect the bottom of the NDND from puncture on rocky shores, use special protective mats or linings under the boat during landing, which will prolong the life of your boat.
For sealing punctures, special remixes with polyurethane-based glue are used. The quality of glue Here it is critical: the use of inappropriate compositions (for example, "Moment" or superglue) can finally spoil the material, making it brittle.
⚠️ Warning: Never keep a wet or dirty boat in a bag for long periods of time. The humid environment promotes mold development, which destroys the fabric and adhesive seams from the inside.
Final summary for the buyer
When you choose a boat with the acronym NDND, you choose mobility and comfort on the water at the expense of floor rigidity. It is a great option for tourists, fishing enthusiasts in hard-to-reach places and those who do not have the ability to carry oversized cargo. Modern materials allow such boats to last for years, withstanding serious loads.
The key is to be clear about your needs. If you want a workhorse for your daily full-load and hard-deck standing-fishing trips, you might want to look at the plyol options. But if lightness and compactness are the priority, then you can do it. NDMA It is unparalleled in its class.
The NDNDD boat is the perfect compromise between the comfort of the inflatable floor and the compactness of the assembly, but it requires a more careful attitude to the coating and careful drying before storage.
In conclusion, the inflatable boat market is constantly evolving, and the technology for making BNDT is becoming more advanced, new coatings, stronger reinforcement threads and improved valve systems are emerging. Careful study of the specifications of a particular model will help you make the right choice.
Can I use a boat with a powerful motor?
Yes, but with limitations, a soft bottom creates more hydrodynamic drag, so the boat may be worse off planing with a powerful engine than hard-keel counterparts, and it is recommended to choose a motor that meets the manufacturer's recommendations for a specific load capacity.
How long does the inflatable floor dry before packaging?
Drying time depends on the weather. On a sunny windy day, 30-40 minutes are enough. In cloudy or wet weather, the process can take 1-2 hours. It is important to make sure that moisture has disappeared from all the folds and seams, otherwise mold will appear during storage.
How is the NDNDD different from just an inflatable floor?
The term inflatable floor can be generic. NDND is a specific technical term for low pressure (about 0.2 atm). There is also NDVD (high pressure, up to 1 atm), which is almost as rigid as plywood, but requires a more powerful pump and costs more.
Do I need to buy a separate pump for the bottom of the NDNDM?
You don't need a separate pump, you just need one high-quality pump with two modes of operation or just with a high performance in the first stage, the main thing is that the pump can quickly deliver a large volume of air, because the volume of the bottom is significant.