Choosing a boat for fishing or resting on the water always involves finding a compromise between load capacity, maneuverability and price. Grouper 320 NDLD It's a very different design from the plywood-bottomed pencil that many people use, and it's not just an inflatable inflatable boat, but a full-fledged boat that can withstand a lot of stress and excitement.
The main feature of this model is the use of a low-pressure inflatable floor (LDPB), which allows you to create a rigid body without the use of heavy plywood slates. inflatable floor It provides excellent wave germination and protects against impacts on the bottom when coming ashore, and many anglers choose this option for its versatility and its ability to be used in shallow water bodies, where cider boats would be vulnerable.
In this article we will analyze in detail the technical specifications, real driving qualities and nuances of operation Grupper 320You'll learn which motor is optimal for that length, how to build a boat properly alone, and what the hidden advantages of this design are over competitors, and understanding these aspects will help you make an informed decision about your purchase.
Design features and materials
The basis of durability of any PVC boat is the material of its manufacture. Gruper 320 It uses a five-layer high-density reinforced polyvinyl chloride, and it's not just a fabric, it's a complex composite where PVC layers alternate with a cord grid, providing high tensile strength and puncture resistance. PVC reinforced It also has excellent resistance to ultraviolet radiation and temperature changes, which is critical for operation in the Russian climate.
The bottom is designed using High Pressure Air Deck (HPA) technology, which uses thousands of filaments connecting the upper and lower membranes. When pumped to a working pressure of 0.2 atmosphere, the bottom becomes rigid like plywood, but remains light and unsinkable. quilt It's a longitudinal inflatable beam that runs along the entire length of the bottom, and it gives the body a streamlined shape, improving course stability and reducing yaw in straight areas.
⚠️ Warning: Do not pump cylinders above the recommended pressure of 0.25 atm, especially in hot weather. Excessive pressure can cause joints to rupture or valve deformation, which will disable the boat.
The boats are divided into three independent compartments, which ensures buoyancy even if one of the cylinders is damaged, and at the bottom of the boat is protected by a bolt, which takes on the impacts when mooring, all seams are made by hot welding, which eliminates the possibility of their separation during operation. Grouper 320 NDLD It is also equipped with powerful leer handles and durable switches for installing oars or mounting an awning.
- 🛡️ Material: Five-layer reinforced PVC density of 850 g/sq.m.
- ⚓ Bottom: Low pressure inflatable (LDP) with a keel.
- 🔧 Sutures: Two-way hot welding for maximum tightness.
And the fittings are worth mentioning, because the manufacturer installs flaps like the Frog, or their equivalents, which are easy to use and reliable, but when assembling a boat, it's important to make sure that the valve doesn't get dirt or sand, because this can interfere with the tightness. Assemblance quality In general, it is highly rated, but visual control before the first pumping is mandatory.
Dimensions, weight and passenger capacity
The range of inflatable boats is rich, but Gruper 320 The overall length of the hull is 320 cm and the width is 146 cm, which allows two adult passengers with a full set of fishing equipment to comfortably accommodate a boat with three people in an emergency situation, but this will already affect the performance and safety.
The weight of the boat in the basic configuration is about 38-40 kg. This is much heavier than the counterparts with plywood bottoms of the same length, but the difference is compensated by the convenience of assembly. You do not need to carry heavy sleighs and paioles, dirty in fuel oil or sand. Weight collected It is distributed evenly, making it easier to transport in the trunk of a passenger car, although carrying it alone will require effort or a trolley.
The model's load capacity is estimated to be around 400-450 kg. The actual payload with which the boat maintains good driving performance is about 250-300 kg. This includes the weight of passengers, engine, fuel, anchor and gear. Exceeding this limit will lead to the boat "landing" on the water, increasing sailing and reducing speed.
| Parameter | Meaning | Comments |
|---|---|---|
| Total length | 320 cm | Optimal for 2 people |
| Width | 146 cm | Sustainable landing |
| Boat weight | ~39 kg | No motor or gear. |
| Load capacity | 450 kg | Maximum static |
| Pressure in cylinders | 0.2 atm | Working pressure |
The interior space is ergonomically organized, with inflatable tubes serving as seats at the same time unless a removable slate seat is installed, and many owners prefer to use soft inflatable seats or order additional accessories for comfort during long fishing. Dimensions in packaged form allow you to place the boat in a case of about 110x50x40 cm, which is convenient for storage in a garage or apartment.
Driving qualities and behavior on the water
The most interesting aspect of exploitation is how Grouper 320 NDLD It's a water-based, inflatable floor, and it's a very good wave-deriver, not a flat-slipper, but a softly flowing obstacle, and the kielson structure gives the hull a V-shaped shape, which has a positive effect on the stability of the course when you're driving for an outboard motor.
In quiet water, the boat runs smoothly without requiring constant course correction with oars or a tiller. However, in lateral winds, the sailing of the high sides is affected. This is a characteristic feature of all inflatable boats. wind-fin (if designed) or properly distribute the load, and at low speeds, the boat is docile and predictable.
⚠️ Warning: When driving on full planing with one person on board, be careful. A light boat with a powerful engine can become unstable on turns. Always keep closer to the center or nose for proper weighting.
Compared to the "pencil" type boats (narrow keels), Gruper 320 It loses in speed, but it gains in stability and safety, it's less prone to differentiation and roll when you move a fisherman inside a cockpit, and this is especially important when you're standing up or catching a large fish, and the bottom of the NDNDM is able to dampen the vibrations from the motor, making the journey more comfortable.
Secrets of speed
Why is the boat slower than the data-sheet figures? Often the reason lies in an under-performing bottom or incorrect setting of the transom angle. The bottom must be solid and the engine must stand perpendicular to the water.
In shallow water, the benefits of the design become apparent, and you can safely swim to the shore without fear of damaging the bottom with rocks or shells, which would be fatal for aluminum boats or models with a hard bottom. Maneuverability at low speeds high, which makes it easy to maneuver in reeds or among driftwoods.
Selection of the optimal motor
Selection of engine Gruper 320 It's a balance between speed and fuel economy, and the manufacturer recommends 5 to 9.9 hp motors. 5-horsepower engineIt will provide a plane exit with one fisherman and a confident movement with two.
If you plan to take active walks, water skis or fast crossings over large reservoirs, it is worth considering installing a 9.9 hp engine. However, remember the power limitations of the transan. Installing an overly powerful motor can lead to the collapse of the transanche board or the tipping of the boat on a sharp start. Optimum power For this model, 6-8 hp.
- 🚤 Motor 2.5-3.5 hp: Just for a quiet run, gleaming won't even happen with one person.
- ⚓ Motor 5-6 hp: A golden mean, a Gleess with one, a confident move with two passengers.
- 🚀 Engine 9.9 hp: Maximum performance, access to plane with full load.
The important parameter is the length of the daydwoot. Inflatable boats are usually standard lower unit (S), but it is better to check the recommendations in the passport. lightweight It will be preferable to a heavy four-stroke analogue, if the issue of ecology and oil consumption is not acute.
For the boat Gruper 320 NDND ideal choice will be a two-stroke engine with a capacity of 6 hp It will provide a balance between speed, fuel consumption and weight, which will have to carry on themselves.
Assembly, preparation for the season and care
One of the main advantages of the NDND design is the speed and ease of assembly. You don't have to insert paioles, which is especially true in cold weather or in dirty shore conditions. The whole process takes 15-20 minutes with a pump. To pump the cylinders and the bottom, it is recommended to use a foot or electric pump with a pressure gauge to control the pressure.
The assembly process starts with pumping the bottom, which is a critical step, and the bottom has to be pumped first and before the working pressure to take the correct geometric shape, and then the cylinders are pumped, and if you break the sequence, the boat can drive, and it loses its performance. Proper assembly It guarantees safety and comfort.
☑️ Checklist for water preparation
Boat care Gruper 320 After every fishing trip, especially in salt water or water with a lot of algae, the boat should be rinsed with fresh water and dried, and it is better to store the product in a straightened form or slightly lowered, in a cover, in a dry room at a temperature of -30 to +50 degrees.
⚠️ Warning: Never leave a pumped boat in direct sunlight for long periods of time unattended. Heating the air inside the cylinders can lead to critical pressure growth and seam rupture.
Regularly check the condition of the valves and the docking places of the cylinders with the bottom. The appearance of small scuffs can be eliminated with the help of a remix that comes with the kit. For serious repair of punctures, use a special glue for PVC and a fabric patch. Timely repairs Small defects prevent them from growing into large holes.
Comparison with competitors and final conclusions
In the inflatable boat market at Grouper 320 NDLD There are serious competitors, such as models from Flagship, Hunter or Mnev. The main difference between the Grouper is often the price and configuration. With similar specifications, Gruper often offers a more affordable price, which makes it attractive for beginners. However, the quality of PVC from top brands can be higher.
Compared to hard bottom boats (HDBs), the gains in comfort and speed of assembly are on the NDB side. You don't waste time laying sleighs, and the boat is always ready to descend. But there's a downside: NDB boats are usually heavier and bulkier when folded. Comparison of specifications It shows that the choice depends on the priorities: assembly speed and permeability (TDND) versus compactness and weight (TDP).
As a summary, it can be said that Gruper 320 It's a reliable "working" option for fishing, hunting and water recreation, it forgives mistakes for beginners, is sustainable and spacious. With care, it will last many seasons, delighting the owner with confident behavior on the water, and it's a great choice for those who are looking for a balance between functionality and budget.
Tip: Buy a special glue activator for PVC in advance, it will be useful not only for emergency repairs on the reservoir, but also for preventive treatment of seams before the start of the season.
Frequently Asked Questions (FAQ)
Is it possible to go out into the open water on the Gruper 320 boat (Ladoga, Onega)?
Going out to open bodies of water with a large wave in an inflatable boat with a length of 3.2 meters is extremely risky. Although the design of the NDNDT is stable, its small dimensions make the boat vulnerable to a large wave. It is recommended to stay in the coastal zone or on inland water bodies (lakes, rivers, reservoirs) with winds of no more than 3-4 points.
Which pump is best used to pump the bottom of NDND?
To pump the bottom to a pressure of 0.2 atm (about 200 mbar), a hand pump is not suitable — you just get tired. You need a two-cylinder foot pump or, even better, an electric pump with a car battery that has a high-pressure mode. Membrane compressors also do a great job.
Do I have to take a boat after every fishing trip?
If you can keep the boat in the garage or in the country in an unfolded form, it is better not to lower it completely, but only slightly reduce the pressure. Frequent assembly and disassembly (folding into a case) creates crevices on the material, which over time can lead to microcracks. However, when stored in the apartment, complete drying and assembly are required.
Can I install a sonar and navigator on the Gruper 320 Train?
Yes, the design of the transom board allows you to attach additional equipment, but due to vibrations and possible water intake, it is recommended to use sealed boxes for electronics or attach sonar sensors to a special bracket lowered into the water, so as not to drill inflatable tubes.