Boat under the swamp: choice and alteration DIY

Hunting waterfowl or fishing in remote areas of the deltas often requires specialized equipment. Conventional propeller boats are powerless because of shallow water, reeds and driftwood. swamper It's a unique propulsion system that allows you to move not only through water, but also through dirt, ice and grass, but in order for this to work effectively, you need to choose the right boat.

Choice buoy It's not just buying the first PVC product that you see, it has to withstand specific vibrations, it has a reinforced transom, it has a certain bottom geometry to minimize drag. Many hunters make the mistake of trying to adapt conventional inflatable boats, which often leads to rapid failure of both the boat itself and the expensive motor. Understanding the physics of the process and the technical requirements is the key to successful operation.

In this article, we will discuss in detail what materials are better for building or buying a boat, how to correctly calculate power and weight, and also consider the nuances of self-redesign. cockpit width less than 120 cm It is critical for sustainability when using a large-diameter propeller, and will also discuss legal and safety issues that are often ignored by enthusiasts.

Principles of operation and requirements for watercraft

The wetland is an internal combustion engine mounted on a frame with an air propeller in a protective ring. Unlike the outboard motor, there is no submerged part, which eliminates getting stuck in the mud. However, this design creates powerful air currents that can destabilize a light boat. resilience It's becoming number one priority.

The hull material must be not only strong, but also quite rigid. The soft sides of PVC boats under the influence of the propeller's jet propulsion can be deformed, changing the hydrodynamics. Metal boats (aluminum) in this respect win, but lose in weight and transportability. The optimal compromise is often the best. High-pressure PVC with additional reinforcement.

The most important element is the transom. The conventional board is not suitable here, because the weight of the propeller engine can reach 40-60 kg, not counting vibration loads. The Trambark must be integrated into the power kit of the boat. If you plan to use the swamp boat regularly, it is worth thinking about the importance of the use of the swamp. stationary engine frames directly to cylinders or bottom through the sling system.

⚠️ Warning: Using a swampboat on a soft-floored boat (BBB) without a hard flooring is strongly discouraged. Vibration from the engine can damage the valves and seams at the attachment sites.

Aerodynamics also plays a role. High sides create sailing, which, with side winds and propellers, can cause the boat to be demolished, so the boat profile should be as streamlined as possible, and the center of gravity shifted downwards, which is especially true for models planned for use in open water.

Material selection: PVC vs. Aluminum

Before you start building or buying, you have to make the choice of the material. advantages and disadvantagesWe're going to go through these in detail so you can make an informed decision.

Aluminum boats (Kazanki, Crimeans) are extremely rigid, easy to frame an engine without fear of hull deformation, durable, and not afraid of sparks or accidental impacts on driftwood, but their weight is often a problem, and a heavy aluminum boat is harder to pull ashore in swampy terrain, which is one of the key scenarios for using a swamp.

PVC boats are gaining weight and compactness. Modern fabrics, such as: Oxford 1100-1400g/m2The main advantage of PVC is that it can fold the boat into a case and take it to the trunk of the passenger car, but there is also a disadvantage: the need for constant monitoring of pressure in the cylinders and the risk of puncture.

• 🛶 PVC: Easier to transport, softer to cushion shocks, but requires protection from sparks and sharp objects.
• 🚣 Aluminum: Unkillable body, easier to install the engine, but heavier and noisier when driving.
• ⚖️ Composite: It is less common, combines rigidity and lightness, but is difficult to repair in the field.

The bottom shape is also critical for the swamp, with flat bottoms (platescodon) providing better shallow water passability and less resistance when sliding with a propeller. Keel boats are better at cutting the wave, but in the swamp their advantages are offset, and the stability of lateral rolls may be lower.

Transcension design and enclosure reinforcement

The most important step in preparing a boat for a swamp is to organize the engine anchorage. The standard hinged transom, which comes with these boats, rarely withstands the weight of a powerful swamp. modernization.

There are two basic approaches: creating a removable frame that is slinged to the cylinders, and pasting/inserting a rigid transom into the boat design. The first option is good because it does not violate the integrity of the cylinders, but the center of gravity is high. The second option is more reliable, but requires professional execution.

Transnant pasting technology

The sticker uses a strip of the same material as the boat, 15-20 cm wide, which is glued around the perimeter of the connection between the transom board and the cylinder with a gait on both elements. It is important to use two-component polyurethane glue and observe the temperature drying regime.

When strengthening the body, additional tapes of PVC fabric are often used along the waterline and in places of friction, which protects the main material from abrasion when in contact with reeds and sand. landing-board increased rigidity, which will take on part of the loads during mooring and towing.

Don't forget the drainage. Swampers often work in conditions where a lot of water gets into the boat (splashing, swamping by a screw wave), self-draining holes or a powerful bilge pump are essential elements of equipment. Water in a boat is not only discomfort, but also loss of stability.

Parameter	Standard transom	A reinforced transneur	Scam on cylinders
Max. Engine weight.	20 kg	80 kg	60 kg
Vibrational load	High.	Low.	Medium
Difficulty of installation	Low.	High.	Medium
Effect on cylinders	Minimum	Missing.	Friction/load

Power selection of the engine and propeller

The efficiency of the swamp is directly dependent on the matching of engine power and size of the screw displacement of the boat. Too weak engine will not be able to bring the loaded boat to plane, and too powerful will waste fuel and create excess traction, dangerous to the design.

For single or double PVC boats, the optimal engine is 10-15 hp with a screw with a diameter of 90-110 cm If you plan to transport trophies or two hunters with cargo, you should look towards the engines 18-25 hp.

The propeller's step also matters. Heavy boats and overgrown bodies of water need a large-step propeller to snatch through the resistance of the grass. For clean moors and light boats, a smaller propeller that allows for high speed will do. The adjustable pitch is the ideal, albeit expensive, solution.

Engine noise is another factor. In hunting, noiselessness is often more important than speed, so many craftsmen install homemade silencers or use lower valve motors (OHVs) that operate quieter. Silencer It must be effective, but not create a back pressure that is harmful to the engine.

Safety and equipment during operation

The swamp has risks other than a normal boat ride, where the speedy rotating propeller is in close proximity to people and cargo, and any negligence can lead to tragedy, so safety rules here should be stricter than on a regular pond.

First of all, all passengers must be inside the cockpit, below the level of the cut-off of the sides; it is forbidden to lean overboard or get up while driving; the cargo must also be securely secured; the wind from the screw can easily carry light things, hats and even documents.

• 🛡️ Safety guard: The screw must be closed with a reliable casing, excluding contact with foreign objects.
• 🔇 Earplugs: The noise level from the swamp is often more than 90 dB, which is harmful to hearing during prolonged operation.
• 🧥 Life jackets: It is a must for everyone on board, even if you are a great swimmer.

⚠️ Warning: Never start the engine if there are people or animals in the immediate vicinity of the propeller (less than 5 meters behind) and the jet stream can knock you down or injure you.

Fire hazards are also important to consider: gasoline engines and fuel vapors in the enclosed space of the cockpit (especially if it is deep) create a risk of ignition. Having a fire extinguisher in an easily accessible place is not just a formality, but a necessity.

Legal aspects and registration in GIMS

Many owners of swampers are wondering: do you need to register such a boat? According to the legislation of the Russian Federation, small vessels weighing more than 200 kg (together with an engine) or with an engine power of more than 8 kW (about 10.8 hp) are subject to registration.

If your swamp is more powerful than 10.8 hp, registration is mandatory. The difficulty is that homemade swamps often don't have certificates of conformity. This requires a GIMS inspection procedure, where an inspector checks the stability, unsinkability and safety of the structure, which can be difficult for unique homemade ones.

Driving a vessel with an engine of more than 10.8 hp also requires the right to the appropriate category. Lack of rights and registration can lead to fines and detention of the vessel until the circumstances are clarified.

In some regions, homemade swamps are more loyal if they are used exclusively for hunting and do not go on the shipping lanes, but you should not rely on this - the law is the same for everyone.

Frequently Asked Questions (FAQ)

Can I put a swamp on a regular inflatable boat without alterations?

Theoretically, you can if the engine is light (up to 10 hp) and the trunk of the boat is strengthened. However, for high-powered engines, a conventional boat will not work because of the risk of deformation and low stability.

Which screw is better: two-bladed or three-bladed?

For a swamper operating in harsh conditions (grass, tin), a two-bladed screw is often preferred, less prone to fouling and easier to digest floating objects, three-bladed more effective in clean water, but more capricious.

Do I need to paint the boat under the swamp in camouflage?

In terms of hunting, yes, it masks the boat in reeds. Technically, light colors (gray, green) are less heated in the sun, which prolongs the life of PVC material. Black boats are more heated and can deform from pressure.

How much is the PVC fabric during active operation of the swamp?

With careful attitude and high-quality material (1100 g / m2), the boat lasts 5-7 years or more. The main enemies are ultraviolet, improper storage (compressed) and mechanical damage. Regular washing and drying significantly prolong the service life.

Is a swamper dangerous for fish in shallow water?

The propeller does not stir the bottom as much as the propeller of the outboard motor, but creates a powerful wave. In very shallow water (less than 30 cm), it can raise mud and mud, which temporarily worsens the conditions for fish, but does not cause critical harm to the population when used wisely.