Choosing a swimming aid for fishing or hunting always involves finding a compromise between the carrying capacity, weight and dimensions in the assembled form. Polar Bird 385 NDLD It occupies a unique niche in the inflatable vessel lineup, offering an impressive length of almost 4 meters while maintaining relative transportability. It is not just another inflatable boat, but a serious tool for passing large water areas where stability and safety are important.
The low-pressure inflatable floor design (LDPB) is a huge change in the way you feel about the comfort of water travel. Unlike hard-floorboard models, it offers a perfectly flat surface, excellent hydro-aerodynamics, and the ability to sleep in a boat without any extra gear, but like any other technology, it has its own features to consider before buying.
In this article, we will discuss the specifications, nuances of the build and real driving qualities so that you can make an informed decision. polyvinyl chloride High density under load will help extend the life of your vessel.
Design features and materials
The base of the body is a five-layer reinforced PVCThe density of the fabric in the region of 900 g/sq.m. allows you to withstand serious mechanical stress, including impacts on snags or rocky bottoms when carefully operated. The seams are made by a tape method, which ensures the tightness of the joints even when they are in water for a long time.
The key element of the model is the bottom, made by technology NDMAIt's a single structure with beads, which eliminates the movement of the paiola, and inside the bottom are longitudinal and transom stiffness ribs (stringers) that form the keel line and give the bottom the necessary rigidity, which allows you to achieve high speed and confidently hold the course even when you're excited.
⚠️ Attention: When pumping the bottom of the NDND, strictly control the pressure with a pressure gauge. Pumping in the sun can lead to rupture of the seams, and failure to pump - to loss of driving qualities and deformation of the keel.
The cylinders are separated into independent compartments, which improves the safety of navigation, and in the bow there is an inflatable keel, which together with the keel of the balloon forms sharp contours that promote better planing, the transom board is made of moisture-resistant plywood and protected by linings that prevent abrasion of the material.
The secret to the longevity of seams
The quality of the joints gluing depends on the temperature in the shop during production. Boats produced in winter without proper heating may have less reliable connections, so when buying, pay attention to the release date and storage conditions.
Assembly and preparation for launching
The process of building an inflatable boat requires a different algorithm than working with a peyol model, and the rule of thumb is that the frame is assembled first, and then the final pump is made, because the soft bottom has to spread out and take the right geometry before you can rigidize the sides.
First, you need to put the boat on a flat surface, cleared of sharp objects, pumping from the bow and aft compartments of the cylinders, but not to full pressure, then air is fed into the keel and inflatable floor, and only after the bottom has spread and taken shape, you can finish the board to an operating pressure of 0.2 atm.
☑️ NDNDM boat assembly algorithm
If you pump the boat in the shade or in a cool morning, it can become stone by noon. In such cases, you need to blow out excess air to avoid damaging the seams, using quality pumps with pressure gauges greatly simplifies this process.
Use special bags to drag the assembled boat along the shore. Transporting the boat by a tray or cylinders on sand and stones will quickly abrade the PVC protective layer.
Driving and seaworthiness
On the water. Polar Bird 385 It's very confident, because it's long and it's squirty, and it's a very good wave cutter, and it's a soft bottom that quenches the impacts on the water, which reduces the fatigue of the passengers when they go long distances, and unlike flat-bottoms, you don't really feel the slaps on the water, which is especially important when you fish with sonar.
However, the large sailing and softness of the structure have consequences. In strong side winds, the boat can demolish, requiring active operation with oars or an engine to hold its course. In planing with a single passenger and a powerful engine, you can see the effect of "dolphining" - rhythmic bouncing of the nose. To combat this, you need to properly distribute the load or adjust the angle of the motor.
| Parameter | Meaning | Note |
|---|---|---|
| Length overall | 385 cm | Roomy cockpit |
| Oversize width | 164 cm | Parking stability |
| Diameter of the cylinder | 45cm | High-side |
| Load capacity | 650 kg | Up to 4-5 people |
| Packaging weight | 58 kg | Demands 2 people. |
High-speed handling depends on the engine being installed, and it is recommended that 9.9 to 15 hp engines be used to reach the plane at full load, and that less power will allow displacement, which is economical but slow.
Comparison with solder models
Main advantage NDMA And you don't have to drag heavy slabs, fight them in the water, and spend time laying them down, and the bottom is always flat, without gaps or gaps that water can get into or where fishing gear can get stuck.
On the other hand, a hard floorboard gives you more predictable behavior at higher speeds and with a powerful engine. A boat with NDND is more viscous because of the flexibility of the design. If your driving style is aggressive, or you plan to put a motor with a capacity of more than 15-18 hp, the solder version may be preferable.
- 🚀 Assembly speed: NDND is collected in 10-15 minutes, payload - in 30-40 minutes.
- ⚖️ Weight: The inflatable floor is lighter than the floorboard kit, but the NDND boat itself is often heavier due to the complex design.
- 🛡️ Reliability: Pyol is harder to damage on a sharp object than an inflatable floor.
⚠️ Warning: Do not keep a boat with NDND assembled in a hot room or in direct sunlight for a long time, which leads to stretching of the fabric and loss of the geometry of the bottom.
Operation and care of PVC
The durability of your boat depends on proper care. After every fishing, especially in salt water or dirty water, the hull must be washed with fresh water. Salt deposits and organics can destroy the structure of the polymer and glue over time. Use a soft sponge and non-aggressive detergents.
Drying is a critical step, and the boat cannot be wet, and the moisture left in the folds of the fabric or under the valves will lead to mold that destroys the reinforcing layer, and it is better to dry in the shade, in the straightened form, allowing air to access all surfaces.
Proper drying and storage in a cool place at a temperature not higher than 25 ° C is the guarantee that the boat will last you more than 10 years without losing its tightness.
Use a spacious bag to keep the cloth from crumpling into a tight lump. Periodically, at least once a season, check the pressure in the compartments. If the boat is "baiting" faster than normal, use a soap solution to look for micropunctures.
Repair and rehabilitation
Despite the high strength, punctures and cuts are possible. In order to repair the field quickly, you need to have a remix kit that comes with a kit. It usually includes a piece of PVC fabric and glue. It is important that the glue is specialized, polyurethane, and not the usual "moment" or rubber glue.
The glue process requires degreasing the surface (acetone or alcohol) and applying the glue in two layers with intermediate drying. The first layer is rubbed into the fabric, the second is applied in 10-15 minutes, after which the parts are combined under the press. The quality of the repair depends on the temperature: optimal work at +20..+25 ° C.
Puncture sticker algorithm:1. Blow the compartment and degrease the repair site.
2. Clean the surface with fine sandpaper.
3. Apply the first layer of glue, allow to dry for 15 minutes.
4. Apply the second layer, connect the patch and the main material.
5. roll with a roller or solid object to remove air.
6. Hold under load for 24 hours.
For more serious damage, such as joints divergence, it is better to contact a specialized service that has equipment for hot vulcanization or professional gluing.
Can I leave the boat on the water for a few days?
Short-term (1-2 days) is possible, weather permitting and there is no strong current, but prolonged unattended exposure to water is not recommended due to the risk of algae fouling the bottom (which spoils the fabric), ultraviolet radiation and the possibility of damage by the anchor flap or rocks.
What is the maximum permissible weight of the engine for this model?
For Polar Bird 385 It is recommended to use motors with a capacity of up to 15-18 hp Installation of a more powerful motor is possible, but requires caution: there is a high risk of damage to the transom or loss of control due to too high speed and softness of the bottom design.
Do I need to lubricate the valves before storage?
Yes, it is recommended to periodically lubricate rubber valve seals with silicone lubrication, which will prevent rubber from drying out, cracking and ensuring leakage in the future.
Does the color of the boat affect the fish?
There is a perception that bright colors can scare fish away, especially in shallow waters. However, at depths of more than 1 meter, the difference in illumination under the boat of different colors is minimal. For fishing, masking or dark green colors are more often chosen, which is also less heated in the sun.