In the history of domestic water-motor construction Progress 4 It's not just a water vehicle, it's a symbol of an era of affordability and amazing maintainability, and tens of thousands of these boats still ply the vastness of rivers and lakes, proving that they're properly designed. duraluminium It can last for decades with proper care.
Many aquatic motorists choose this model for its utilitarian and simple design. Unlike modern fiberglass analogues, the D16AT aluminum alloy, from which the sides and bottom are made, allows welding work directly on the shore in case of damage. Motorcraft Progress 4 It has become the base platform for many homemade crafts, from fishing catamarans to cargo flats.
In this article, we will discuss the technical features, the nuances of plywood skin and the possibilities of installing modern engines. You will learn why this boat remains relevant and how to extend its life, turning it into a comfortable boat for a family holiday.
History of creation and design features
The boat was developed at the Kuibyshev Aviation Plant, where aviation riveting and aluminum technology were transferred to civil shipbuilding. seaworthiness And the cockpit was more rational, and the designers were betting on the ease of mass production, which made it very common.
The boat's hull is made to keel-torpedoThis is a good germination on the wave and reduces the risk of burrowing your nose in the course against the wind, and an important feature is the presence of developed zygomatic splashers that effectively divert water to the sides. Dural alloysThe corrosion systems used in construction are highly durable, but require protection against corrosion, especially in places of contact with water.
Why the D16AT?
D16AT (duraluminum) is a high strength and lightweight alloy, but it is less resistant to corrosion than aviolet (AMG). That is why Progress 4 requires mandatory painting and protection of the bottom, unlike boats made entirely of corrosion-resistant magnesium alloy.
It's worth noting that the geometry of the body was designed to accommodate outboard motors up to 30 hp, which was a remarkable figure for its time. The transom plate is reinforced, allowing more powerful modern engines to be installed with caution. Construction provides for the presence of runduks that simultaneously serve as seats, and a removable windscreen.
Technical specifications and dimensions
To understand operational capabilities, you need to look at dry numbers: the dimensions of the boat allow you to transport it on the roof of a passenger car or on a special trailer. The hull weight without equipment is about 145 kg, which makes it heavy enough for one person, but quite liftable for two when loading.
The capacity of the cockpit is designed for four people with full equipment, which corresponds to a carrying capacity of 400 kg. Passenger capacity Exceeding this limit is dangerous because it reduces the height of the boat above the water and worsens the stability of the vessel.
| Parameter | Meaning | Note |
|---|---|---|
| Longest length | 4550 mm | Including the forespigoon |
| largest width | 1700 mm | On the sides. |
| Height of board | 650 mm | Midle. |
| Hull mass | 145 kg | No equipment. |
| Load capacity | 400 kg | With the crew. |
It is important to consider that the actual weight of the boat ready for exit will be significantly higher than the passport due to the installation of equipment, anchors, life jackets and fuel. Static stability Progress 4 is considered high, allowing fishermen to safely stand up to full height for spinning throw or working with nets.
The actual payload rarely exceeds 300 kg if you plan long walks with a full load of fuel and equipment.
Plywood paneling: insulation and noise insulation
One of the main problems of aluminum boats is the high noise level and thermal conductivity of the metal. Progress 4 Without additional treatment in windy weather or in cold water, it can be uncomfortable, and the solution to this problem is the widespread practice of plywood covering the cockpit.
For the implementation of this project, moisture-resistant plywood of the FC brand with a thickness of 4-6 mm is usually used. thicker material is not recommended for use due to a significant increase in the weight of the boat, which will adversely affect the driving performance. Plywood plating not only retains heat, but also hides the power set of the body, making the interior more neat.
- 🛠️ The first stage is the dismantling of all regular elements: seats, runduks and floorboards.
- 📏 Then, accurate measurements are taken from the side and bottom, on which plywood sheets are cut.
- 🔩 Mounting is made on aluminum corners or through holes in the sides using a sealant.
- 🎨 The final touch is painting or coating with varnish to protect against moisture.
⚠️ Note: When drilling the sides for attaching the skin, be sure to use metal drills and immediately treat the holes with anticory to prevent the development of corrosion around the fastener.
Between the metal of the side and plywood, experienced craftsmen recommend laying a layer foamfoil It's going to create an additional barrier to cold, and it's going to eliminate plywood from the metal in the wave, and this sandwich panel is going to make it a lot more comfortable to use.
Installation of the outboard motor and the transom plate
The standard Progress 4 transom plate is designed for motors with a short leg (S) and power up to 30 hp However, modern trends dictate their rules, and many owners are looking to install more powerful engines. transom plate It is made of the same duraluminum sheet as the side, and has a reinforced design.
When installing an engine with a capacity of more than 25 hp, you should be prepared for the fact that the boat can start to "goat" - high nose picking. To combat this effect, transom plates or hydrofoils installed on the engine's lower unit are used. Other angle It also plays a critical role in the scaling up.
The motor is mounted through standard rods. It is important to ensure that the anti-cavitation plate of the motor is on the same level with the bottom of the boat or slightly lower (by 10-20 mm). If the motor is buried too much, water resistance will increase; if raised high, cavitation and loss of traction will occur.
When buying a used Progress 4 engine, pay attention to the length of the lower unit. A short leg (S) is ideal for this boat, a long leg (L) will require a transom insert.
Repair of the hull and control of corrosion
The main enemy of the duraluminum casing is electrochemical corrosion, especially in contact with water and in the presence of vagus currents. Progress 4 You need to regularly check the condition of the bottom and waterline, and the appearance of whitish plaque or bloating paint is the first alarm.
Repair of holes or cracks is usually done by argon-arc welding, requiring qualifications and special equipment, but ensuring the monolithic seam. For small cracks, epoxy compounds with fiberglass reinforcement are allowed, but this is considered a temporary measure.
- 🧼 Carefully clean the damaged area to pure metal.
- 🔥 Weld in an argon environment (for aluminum this is mandatory).
- 🛡️ Apply a primer on aluminum (for example, GF-021 or special epoxy soils).
- 🎨 Cover the repair site with enamel in several layers.
Special attention should be paid to protection against galvanic vapor. If you use a boat in salt water or waters with high mineralization, the installation of zinc treads on the bottom is mandatory. Zinc anodes will be destroyed first, taking on the impact of corrosion and maintaining the integrity of the aluminum body.
⚠️ Warning: Never leave the boat in water for long periods without antifouling coating. The overgrown bottom not only slows down, but also creates pockets of local corrosion under the algae layer.
☑️ Annual hull maintenance
Tuning and modernization of the interior
Progress 4's Spartan interior is the perfect field for creativity, and many owners turn this utilitarian boat into a comfortable miniboat. soft-plate on the seats and on the board, which increases the comfort and safety of passengers.
The cockpit lighting is another element often absent from the runoff, but essential for evening fishing or twilight navigation. A simple LED tape powered by a motor battery or a separate battery changes the usability of boats at night.
To store gear and personal belongings, additional kunduks are often organized, and they can be made of plastic or the same aluminum, fixed to bulkheads. Modernization It is also often associated with windscreen: the standard glass is often changed to a higher one or a visor is installed to protect against rain.
Storage idea
Use the space under the front seats (cans), and installing sealed drawers will allow you to store dry clothes and food even when water enters the cockpit.
Rules of safe operation
Despite its strength, Progress 4 Aluminum is fragile at low temperatures, so hitting ice or rocks at high speed can cause serious damage, and you should move with caution in shallow water.
Metal boats are subject to mandatory registration if their weight exceeds 200 kg or the engine power exceeds 8 hp (rules may change, the current information should be clarified this year). The presence of life jackets by the number of passengers is a law, not a recommendation.
When operating in windy weather, consider the sailing of the hull. An empty boat with high sides can be unstable in strong side wind. Always bring an anchor of sufficient weight and fuel supply (recommended reserve - plus 30% to the estimated).
Safety on the water depends not only on the maintenance of the equipment, but also on the sobriety and prudence of the crew. Progress 4 is a reliable boat, but it does not forgive disregarding the rules.
FAQ: Frequently asked questions
What is the maximum speed of the Progress 4 with a 30 hp engine?
At full load (2 people + equipment) the speed is about 30-35 km / h With one driver and a minimum load, the boat can accelerate to 40-42 km / h, entering the planing mode.
Can the Progress body be cooked with a conventional electrode?
No, duraluminium (D16AT) is only cooked in an inert gas (argon) environment with a tungsten electrode (TIG welding). Conventional electric welding will melt the metal or create a fragile, corrosive seam.
Do I need to register progress 4 in GIMS?
Yes, the hull weighs 145 kg above the 200 kg threshold only when combined with the engine. But since the motor is usually more powerful than 8 hp (3 kW), registration is required regardless of the weight.
Where can I find the skinning plans?
There are no exact factory skin drawings, as this is a user option, and measurements are taken individually from a particular boat, as the geometry can be slightly "cruising" due to deformations over the years.