Legendary Progress 4 The aluminium boat, which has been mass-produced since the late 1960s, still plows rivers and lakes, causing controversy among water-engines, praised for its unpretentiousness and affordability, and criticized for its low seaworthiness and propensity to splash.
Interest in this model has not faded for decades, and many owners are looking for detailed data on its use. technical specificationsUnderstanding the actual capabilities of the hull is important for both buying a used one and upgrading an existing vessel. In this article, we will discuss in detail the parameters that affect driving performance and safety.
It should be noted immediately that Progress 4 It was designed as a universal boat for recreation and fishing inland waters, but time dictates its requirements, and today it is important to clearly understand the limits of permissible loads, and we will consider how the parameters declared by the plant relate to the practice of operation.
History of creation and design features
The model was developed at the Mykolaiv Progress plant in the mid-1960s, and engineers set out to create a more perfect replacement for the previous models, while maintaining the ease of production. The case is made of aluminum-magnesium alloy AMg5M, which ensured good corrosion resistance with proper care.
The design is a riveted case with a longitudinal redane, which made it easier to get on plane, but also had its drawbacks. hull They were not very difficult, making repairs easier, but limiting speed in bad weather.
board-board squirrel-bar It had a dual function: it protected the side from impacts and served as a tow stop, and an important feature was a removable deck that facilitated access to the interior compartments and made it easier to dry the boat after operation, a revolutionary solution for the time.
⚠️ Attention.Despite the strength of the alloy, riveted joints can lose their tightness over time. Check the condition of the rivets regularly, especially in the area of the transom and zygomatic bars.
The design has undergone minimal changes over the years, which indicates that it is refined, but it is worth remembering that the technology of the 60s is inferior to modern standards of comfort, so when buying, try to find a copy with a minimum number of modifications of the "garage" type.
Overall dimensions and weight parameters
One of the key factors in choosing a boat is its physical size. Progress 4 The hull is 4.5 meters long, which allows for comfortable accommodation for four passengers, but makes it difficult to transport a passenger car on the roof without a special trailer.
The midsection is 1.7 meters wide, which is a fairly wide range for boats of this class, providing initial stability, but the large width in the bow at low height often led to intense splashing of the cockpit on the wave.
The body with the equipment weighs about 230 kg, a considerable weight that requires a powerful engine to get on plane and creates difficulties when descent into the water by hand. Load capacity The model is officially declared at 400 kg, which includes the weight of passengers, engine and equipment.
| Parameter | Meaning | Unit of measurement |
|---|---|---|
| Longest length | 4500 | mm |
| largest width | 1700 | mm |
| Height on midship | 620 | mm |
| Hull mass | 230 | kilogram |
When calculating the load, it is important to consider not only the weight of people, but also the mass of fuel, anchor equipment and personal belongings, exceeding the recommended load dramatically reduces the safety of the boat.
Seaworthiness and driving specifications
Driving performance Progress 4 It depends on the power of the engine and the load. In calm water, the boat behaves confidently, but entering the planing mode requires a power of at least 30-35 hp at full load. The optimal power is 40-50 hp, which allows speeds up to 40 km / h.
One of the main problems with the model is the low cockpit and lack of self-emitting, which means that when you move against a wave or on the side turbulence, the water is actively poured over the side, which makes operating on large reservoirs in windy weather risky.
Resilience The boat is tall because of its width, but it can be prone to yaws when it's on the move, especially when you install a high-power engine without reworking the transom. Many owners have experienced the "dolfining" effect of improperly centering their loads.
To improve driving performance, install transom plates or hydrofoil on the engine's lower unit - this will help stabilize the course and reduce splashing.
However, for fishing on lakes and in the coastal area of rivers, this boat has proven to be a reliable worker. It forgives many mistakes of beginners and is easily repaired in the field.
Motors and Motorization Recommendations
In Soviet times Progress 4 motorized Whirlwind-30 or Wind 12.Modern owners prefer imported two-stroke or four-stroke units. The height of the transom allows you to install standard lower units, but you may need to install a supercharge for powerful engines.
When choosing an engine, you should consider the power limitation associated with the design of the transom and general stability. Installation of the engine is more powerful 50-60 hp requires a serious alteration of the aft part and the installation of a reinforced transom, which changes the classification of the vessel.
- 🚤 Whirlwind-30 Classic, but noisy and voracious option, requiring frequent maintenance.
- 🚤 Yamaha 30-40 Optimal balance of weight and traction, high reliability and efficiency.
- 🚤 Tohatsu 40-50 Excellent traction at low revs, which is important for the heavy hull of the boat.
It is important to choose the right length of the data-dwoot. Too high a rotor lift will lead to cavitation on corners, and too low will lead to loss of speed and increase fuel consumption.
⚠️ Attention.When installing a powerful imported motor, be sure to check the condition of the transax plate. Aluminum eventually “gets tired” of vibrations and may not withstand increased loads.
Four-stroke engines are preferred because of their lower fuel consumption and no need to mix gasoline with oil, but their greater weight can shift the center of gravity, requiring redistribution of the ballast in the bow.
Comfort, equipment and planning options
Interior Progress 4 The nose has a trunk that is covered by a removable lid, which also supports the legs of the front passenger, and the trunk capacity allows you to accommodate the anchor, life jacket and spare parts.
The seats are designed as rigid Banc shops, which are not always convenient for long transitions. Many owners make soft linings themselves or completely change the configuration of the seats to improve comfort.
To protect against precipitation and sun, awning frames are often used, which are easily mounted on regular mounts. The presence of an awning is critical, since an open boat quickly heats up in the sun and gets wet in the rain.
Electrical equipment is usually limited to a minimum set: battery, running lights and dashboard. Owners often add sonars, navigators and USB charges, organizing wiring inside the boards.
Care, maintenance and typical problems
Aluminum housing requires minimal maintenance, but ignoring simple rules can lead to rapid wear and tear, and the main enemy is galvanic corrosion, especially when used in salt water or when contacting dissimilar metals. Anodic protection It is mandatory for year-round operation.
A typical problem is to leak through rivet joints and along the zygomatic bars. To eliminate leaks, a polyurethane-based sealant is used, but the surface must be thoroughly cleaned and degreased before applying it.
- 🔧 Regularly lubricate mobile connections and loops.
- 🔧 Check the condition of the transom plate for cracks.
- 🔧 Clean the bottom of the groves and algae after each parking.
Keeping the boat upside down under a canopy or indoors is best, and prolonged exposure to direct sunlight and rain accelerates the aging of seals and the fading of paint.
☑️ Seasonal preparation for winter
If you find paint bloating or white oxides on the metal, immediately clean the area to pure metal and cover it with soil.
Comparison with analogues and summary
In today's market Progress 4 It competes with more modern PVC and aluminum models, and it gains in durability and speed compared to inflatable boats, but it loses in transportability, and it is inferior in ergonomics to new aluminum boats like the Crimea or Ob, but it gains in value in the secondary market.
The key advantage of Progress 4 is its maintainability: any welder with argon or even a set of rivets will allow you to return the boat to operation in garage conditions. This makes the model ideal for remote regions where there are no service centers.
So to sum up, this is a boat for those who value practicality and are willing to put up with some discomfort for the sake of reliability, and it's not suitable for long-distance high-speed walks, but it's a great helper for a fisherman or a hunter.
Frequently Asked Questions (FAQ)
What is the maximum speed of the boat Progress 4 with a 30 hp engine?
With one driver and a 30 hp engine, the speed is about 30-32 km / h. When fully loaded, the speed drops to 20-22 km / h, and the boat may not go into plane without the correct weighting.
Can the load capacity of Progress 4 be increased?
Formally, the carrying capacity is limited to 400 kg. The increase in this parameter is possible only by installing additional floating blocks (inflatable tubes) on the sides, which will change the class of the vessel and require registration of changes.
Do I need to register progress 4 in GIMS?
Yes, the weight of the curbed hull (230 kg) exceeds 200 kg, which obliges the owner to register the vessel with the GIMS, regardless of the power of the installed engine.
What kind of gasoline is best used for engines on this boat?
For two-stroke engines, a mixture of AI-92/AI-95 gasoline is used with oil in the proportion specified by the engine manufacturer (usually 1:25 or 1:50).