Choosing an inflatable floater is always about finding a compromise between comfort, speed and ease of transportation. NDMAAnd the question is, what's behind these letters, and why is this type of bottom often chosen for serious water trips and fishing? Inflatable Low Pressure DayIt is a full-fledged inflatable section, not just a flat insert.
Unlike hard plywood or aluminum floorboard, the bottom of the NDNDM is pumped up to a certain pressure, creating a single sealed shell with the sides. This radically changes the behavior of the vessel on the water: it becomes streamlined, easier to overcome waves and provides better germination for planing. If you are looking for maximum comfort and are willing to put up with a little more time preparing for descent, then it is the best way to go. low-pressure This will be the best solution for you.
Decoding of the abbreviation and the principle of operation
First, let's get a sense of the terminology, so you don't have any doubts. NDMA It's not just a void inside the hull, it's a complex engineering structure, made up of two layers of solid fabric connected by thousands of armour strands, and when you pump air in, these strands are pulled together, creating a rigid and stable platform that can support the weight of the passengers and the motor.
The key difference from the classic floorboard is that it doesn't have rigid elements, and it's aerodynamic cushion, and when you pump the balloons on the sides and bottoms, they form a monolithic structure, and the pressure inside the bottom section is usually lower than in the side cylinders, which is why it's called "low pressure," which allows the bottom to be flexible, absorbing shocks against the waves, but still be solid enough to move comfortably inside the cockpit.
⚠️ Warning: Never pump the NDND section under direct scorching sun rays to maximum pressure. The air expands when heated, and the excess pressure can damage the seams or deform the shape of the boat.
Many models have overpressure venting valves, but you don't have to rely on them. Manually control the process. NDND design often has longitudinal or transom partitions inside, which give the bottom the necessary rigidity and prevent it from being blown up to the sides under load. This ensures course stability, which is critical when driving at high speeds.
Design features and materials
The basis of such boats is high quality. PVC (polyvinyl chloride) This is a multilayer material that is resistant to abrasion, fuel, ultraviolet and salt water. The NDNDB design uses the same material as the cylinders, but often with reinforced reinforcement mesh. The thickness of the fabric can vary, but the bottom is usually more densely packed to avoid punctures when touching the bottom of the reservoir.
The internal structure of the bottom can be performed using technology Drop-Stitch (although this is more commonly the case with SUP boards, boats use filament-like analogues) or simply have an internal sling system. Slings connect the top and bottom planes, preventing it from swelling into a ball. It's this system of slings that determines the geometry of the bottom, and the more often the interior partitions are located, the tougher the bottom will be when assembled.
The important element is the valve system, and in boats with NDNDM, the number of valves increases, and a separate valve is designed to supply air to the bottom. Nadul-SpuglIt also has models with additional inflatable kilsons that are integrated into or attached to the bottom structure to improve driving performance.
- 🛡️ PVC reinforced - the main material that ensures the strength and tightness of the entire structure.
- 🧵 Ligaments of filament - an internal system that sets the shape and rigidity of the inflated bottom.
- ⚓ kylson - an inflatable or rigid beam running along the bottom to improve course stability.
It's worth noting that the quality of the seams gluing in the junction area of the bottom and cylinders (shaft beam) is a critical parameter. This is where the maximum tear loads are tested. Manufacturers use hot vulcanization or two-component adhesive to create an inseparable connection. When buying, be sure to inspect these areas for glue leaks or irregularities.
Comparison of BNDT with floorboard bottom
The main dilemma of the buyer: what to choose is a classic pyeol (plywood or aluminum floor) or NDMAThe payroll boats are assembled from individual sheets inserted into the slots, which gives a very hard, "concrete" bottom that is comfortable to walk on, but it takes 15-20 minutes to assemble such a boat, and when folded, it is a heavy backpack with sharp corners.
A boat with NDND is going faster. You don't have to mess around with sheets of plywood trying to get into the slots with your frozen fingers. You just spread the boat, pump the sides and the bottom. Packed, it's a soft bag that's easier to put in the trunk of a car. However, cruising on an inflated bottom is less comfortable than on plywood, it will spring.
The difference is felt on the water, the solder boat is heavier and has higher drag due to the stepped surface of the bottom (the joint of the sheets). The NDND boat has a smooth contours, which allows it to go more easily to planing and develop higher speed at the same engine power. NDNDM fuel consumption is usually lower by 10-15%.
| Comparison parameter | A boat with a floorboard | Boat with NDM |
|---|---|---|
| Assembly time | 15-25 minutes. | 10-15 minutes. |
| Packaging weight | Heavyer (wood/metal) | Lighter (PVC only) |
| Comfort of cruising | High (solid surface) | Medium (spring) |
| Speed/planing | Good. | Excellent (best hydrodynamics) |
| Compactness | Oversize packaging | Compact bag |
If you care about every minute of assembly and value speed, the choice is obvious, but if you plan to move around a lot inside the boat, carry heavy boxes of gear, or have problems with the vestibular apparatus (it rocks harder on the soft bottom), then hard floorboard may be preferable, but for most anglers and tourists, NDNDM is becoming a middle ground.
Advantages and disadvantages of inflatable floor
Let’s take a closer look at what you will have to face during operation. NDMAThe first thing to note is that it's seaworthy, because the smooth bottom cuts through the wave, not slaps it like a flat floorboard, and it reduces the impact on the angler's spine and reduces noise, which is important for careful fish.
The second big advantage is thermal insulation. When you're on the water, you don't sit on cold plywood that draws heat from your body. The airbag works like a thermos. In cool weather or in early spring, it's a significant comfort factor. In addition, there's little water in the hold in the boat, because the sealed bottom has no joints through which moisture can seep (unlike precast floorboard).
The secret to fast drying of NDNDM
After fishing, you don't have to completely disassemble the boat to dry the bottom, just turn it upside down on the grass, open the valves and let the water drain, and the air inside the sections will quickly evaporate the moisture residues due to circulation.
But there are downsides, and the main one is vulnerability to puncture, and although modern PVC is very strong, a sharp stone, a snag or a knife that's forgotten in a boat can damage the bottom, you don't need to repair the paiola at all, and the NDND requires a rim kit and skills, and it's also harder to wash the bottom from dirt and silt, because it can't be removed and washed properly without blowing it off.
⚠️ Warning: Avoid dragging a boat with NDND along the shore even for short distances. Friction against sand or pebbles can imperceptibly thin the material of the bottom, which will cause inflating and rupture when pumped.
Another nuance is load strain. If you put a very heavy load in the boat, the bottom can bend (“play”) to form a hammock. This is normal for low-pressure design, but it takes addiction. To compensate for this effect, many models have rigid stringers or the ability to install removable floorboards on top of an inflated bottom.
Exploitation and care of BNDT
For your boat to last, you have to follow the rules of operation. The basic rule is to control pressure. Use a pressure gauge. Underpumped bottom will collect water in folds and wear out faster on the folds. Pumped bottom (especially in the heat) risks bursting at the seams. Optimal pressure is usually 0.2 atm bottom-and-bottom 0.25 atm For cylinders, but always check the product passport.
After each fishing, the boat must be washed. Use warm water and a soft sponge. Aggressive chemicals, gasoline or solvents can damage PVC. Pay special attention to the valves - sand and dirt trapped in the carving or mechanism can violate the tightness. Periodically lubricate the movable parts of the valves with silicone grease.
☑️ Post-season boat care
Storage is a separate topic. A boat with NDND cannot be kept deflated under heavy objects, because cloth can form, which eventually will turn into cracks. It is better to store it half-blown in a warm room. If this is not possible, try not to fold the boat always in the same folds - change the configuration of the folding.
Use special protection mats under your feet, which not only add comfort, but also protect the bottom of the boat from abrasion by the soles of the shoes and claws of the fish.
Modernization and accessories for comfort
Ownership with a boat NDMA Because the bottom is soft, many owners order or sew hard liners of foamed polyethylene or fine plywood that fit inside the cockpit, which turns the trampoline into a hard platform while maintaining the hydrodynamic advantages of the inflated bottom.
Trans wheels are also popular. For boats with NDM, there are special wheel models that attach to cylinders without deforming the soft bottom. This makes it much easier for the boat to move along the shore. Remember anchor winches, which require a hard pad or reinforcement zone to be installed on the bow of a soft bottom boat.
For winter fishermen or night fishing enthusiasts, insulated floors are relevant. You can put a special inflatable mat or modular coating in a boat with NDNDM that will keep the heat, and it is important not to overload the structure so as not to disturb the centering and stability of the vessel.
The optimal configuration for a universal boat is the NDND with the ability to install a lightweight removable floorboard inlay for floor stiffness if necessary.
FAQ: Frequently asked questions
Can I put a powerful motor on a boat with NDND?
Yes, it can. NDND designs often withstand heavy loads better than the payloads, thanks to the uniform distribution of pressure, the main thing is to follow the manufacturer's recommendations for maximum engine power and correctly distribute the weight of passengers and cargo, so as not to overload the transom.
What to do if you prick the bottom on a fishing trip?
Don't panic. A section-bottomed boat won't sink instantly. Find a puncture site (by ear or bubble), dry the site and seal it with a special PVC remix. If the puncture is large, you can temporarily use a sealant patch or even chewing gum as an emergency measure to reach shore.
How hard is it to pump NDND without a pump?
The low-pressure bottom requires a lot of air, but a little pressure, and it's a real thing to do with a foot pump, but it's time-consuming, and the electric pump from the car's battery will make it a lot easier. Manual pumping is possible, but it's time-consuming and it takes a lot of effort.
Is it true that the NDND is more moist?
It's individual. Soft bottoms do cushion the shocks of the wave, which is a plus for some. But a light swaying platform can cause discomfort for people with a weak vestibular apparatus. Try sitting in a boat on the shore to understand your feelings.
How much is the NDNDM material?
When properly operated and stored, high-quality reinforced PVC lasts 10-15 years or more. The main enemies of the material are ultraviolet light and improper storage (compression, frost). Regular treatment with protective compounds prolongs the life of the material.