Search for information Progress 4 The Internet is often like cruising through a minefield of conflicting opinions, on the one hand, a legendary Soviet design that has been plowing the vastness of our rivers and lakes for decades, and on the other, a lot of complaints about the quality of the assembly and the propensity to foul, and owners are divided into two camps: fans who are willing to forgive everything, and those who faced problems in the first serious operation.
In this article, we will not retell the dry specifications from the passport, but will focus on live experience. Aluminum alloy The D16AT, which is used in production, has its own specifications, which are often not reported in stores. Many buyers do not take into account that the boat was designed in a different era, under different engines and safety standards. Progress 4 A reliable helper or source of constant problems.
It is important to note at once that most of the negative reviews are not related to the design of the hull, but to attempts to operate the boat outside the calculation modes or improper care. A critical point for the durability of Progress 4 is the lack of zinc protection on the transom as standard for many years of production. Ignoring this fact leads to electrochemical corrosion, which can disable the boat in one season of active fishing.
Design features and build quality
The boat's hull is made of duraluminiaOwners often note the stiffness of the wave, which is due to the sharp-brick contours. However, this same stiffness requires careful attention to the attachment of cans and decks, since vibration when the engine is running can weaken the joints. The quality of welds varies from year to year, and often requires rework with a sealant immediately after purchase.
Many users complain of sharp edges inside the cockpit and not having a comfortable fit. Standard equipment is often devoid of important trivia, such as ducks for mooring or comfortable hazelnuts. turret It allows you to install engines up to 30 hp, which is a great indicator for a four-meter boat, and it allows you to achieve high speed even with full load.
- 🛡️ Strength: Aluminum D16AT withstands impacts on rocks and ice that would be fatal for fiberglass.
- ⚖️ Weight: The body weight of about 150 kg requires a trailer or a powerful trailer for transportation.
- 🌊 Seaworthiness: High side and zygomatic keels provide confidence on excitement up to 0.6 meters.
It is worth mentioning the problems with the geometry of the transom. In some instances, there is a "blockage" of the transom in or out, which critically affects the performance and handling. Before buying, be sure to check the angles using the level. If you plan to actively fish, a low landing in a boat can be a minus, since the view is limited, and getting on board is not recommended due to loss of stability.
Corrosion problem and protection methods
The most discussed aspect in the reviews about Progress 4 Aluminum, when it comes into contact with water, especially salty or contaminated with industrial effluents, is susceptible to electrochemical reactions. The owner must be clear: this boat requires care comparable to car care. Ignoring prevention leads to fistulas and shells, especially in the area of the cheekbones and transoms.
⚠️ Note: It is strictly forbidden to use copper-containing paints to treat the underwater part of an aluminum boat, which causes accelerated galvanic corrosion and destroys the hull in a matter of weeks.
For protection, experienced owners recommend using special soils, such as: VL-02An important element is the installation of tread protection (zinc anodes) on the transom and the engine's lower unit, which creates a sacrificial element that collapses instead of the body, and it should become a habit to regularly inspect the condition of the anodes before each outing.
Also worth mentioning is contact corrosion in the fittings. Steel bolts in an aluminum case are guaranteed rust in a year. All fasteners must be replaced with stainless steel or brass, with the mandatory use of insulating gaskets. Sealing all holes with a quality polyurethane sealant will prevent water from entering the voids between the sides.
The Secrets of Aluminum's Long Life
For maximum protection, some owners use the anodizing method or apply polymer coatings of the Line-X type, but this requires dismantling the entire fittings and professional surface training.
Driving and handling
On the water. Progress 4 It's predictable and confident. With its longer stern, it's a good boat, and it's less prowling than a shorter boat. When you go plane with one person in the boat, you can have a nose differentiation, which is done by moving the load or putting in transoms. With two passengers and a 15-20 hp engine, the boat goes to the plane almost instantly.
High speed steerability depends on engine installation. Moving the motor to the right or left relative to the diametric plane (to compensate for the rotor's stop) is often necessary for straight driving. Owners note that at full gas the boat becomes sensitive to steering, so sharp maneuvers should be avoided. Noise when driving the motor is higher than that of PVC, but lower than that of many fiberglass models without additional noise insulation.
- 🚀 Dynamics: Quickly enter the planing mode with the correct loading.
- 🎯 Stability of course: Excellent holds the set course even in the side wind.
- 💦 Spraying: Minimal, due to the high board and shape of the bow.
The important parameter is the ability to move at full load. Passport load capacity of 400 kg is real, but at the same time the speed drops and the boat goes into displacement mode. For fishing with an overnight stay and more equipment, this can be a limitation, requiring a more powerful engine, which in turn will increase fuel consumption.
Outboard motor operation
Choosing a motor for Progress 4 The optimal range is called 15-25 hp. Lower engines (2-6 hp) allow you to move slowly, without putting the boat on the plane with a payload. Heavy two-stroke engines of the old model may require strengthening the transom, because the standard transom is designed for a certain load.
Owners often face the need to find the right propeller. A regular propeller may not provide optimal engine speeds, leading to fuel overruns and detonation. Selecting the pitch of the propeller for a specific load (one fisherman or company with equipment) is a mandatory procedure to unlock the potential of the boat-motor bundle.
The optimal power of the engine for Progress 4 is 20-25 hp, which provides access to the plane with a full load and a cruising speed of about 30-35 km / h.
Motor fastening also requires attention. Regular rods may not provide rigid fixation, especially at high revs. Using an additional safety cable or chain run through the rim bolts will protect against losing an expensive engine when the rods break, which is especially true when driving against a wave or at high speeds.
Comparison with competitors: Progress 4 or Kazanka 5M?
The eternal dispute between fans Progress and Kazan The Kazan 5M has a more modern design, better cockpit ergonomics and often better build in later versions. However, progress is gaining in maintainability and simplicity of design. Kazanka is more prone to swinging on the wave due to the features of the contours, while progress is tougher but more stable.
The table below provides a comparison of key parameters based on the statistics of feedback from owners:
| Parameter | Progress 4 | Kazan 5M | Comments |
|---|---|---|---|
| Materials | Duraluminium D16AT | Duraluminium D16AT | Equal corrosion resistance |
| Load capacity | 400 kg | 400 kg | The real payload is similar. |
| Max. Power. | 30 hp. | 35 hp. | The Kazanka allows you to put more powerful |
| Price (b/y) | Below. | Higher. | Progress is more accessible on secondary |
If you plan family walks with children, Kazanka may seem more comfortable because of the softer seats and. For a single fisherman who cares about reliability and the ability to "not be afraid" of hits to the bottom, Progress is often a more practical choice.
Tuning and modifications DIY
Purchase Progress 4 Most owners will eventually need to make improvements, a popular improvement is the installation of soft overhead seats and the reworking of rundooks, and regular wooden decking is often replaced with carpet-coated plywood or grooved aluminum for better grip and durability.
One of the most useful improvements is the installation of windscreen, which is often missing or poorly shaped, homemade Plexiglas designs significantly improve comfort when driving in cold weather, and owners install additional anchor lines and coffins, as regular mounting points are often not enough for complex fishing.
☑️ Checklist of mandatory improvements of Progress 4
Electrical tuning is another important step: installing a quality splash-proof battery and a tail socket for the sonar or the navigator makes operation modern. Don't forget the lighting: installing running lights that comply with the rules is mandatory for going out into the water at night or in poor visibility.
Frequently Asked Questions (FAQ)
What is the maximum weight you can load in Progress 4?
Passenger carrying capacity is 400 kg, including the weight of passengers, engine, fuel and equipment, exceeding this limit reduces safety and impairs driving performance, although structurally the boat can withstand more.
Do I need to paint Progress 4 inside?
The interior paint is mainly for aesthetics and easy cleaning of dirt. However, if there are leaky seams inside, the paint can temporarily hide leaks, the main thing is to provide ventilation between the sides to avoid condensation.
Can I put on a Progress 4 engine 30 hp?
Technically, and many do, but you have to take into account the load on the transom and the ability to drive the boat at high speeds, and for a 30 hp engine, you want to install a hydrocompensator on a lower unit.
How often should I change zincs on the boat?
The frequency of replacement depends on the activity of operation and salinity of the water. On average, zinc treads are tested each season and changed when more than 50% of their volume is destroyed. In salt water (Azov, Baltic) replacement may be required several times per season.