The question of what the real mass of Soviet and post-Soviet water heritage is is of concern to thousands of fishermen and hunters across the country. Kazanka It remains one of the most popular boats, but the scattering of data on the Internet is often misleading, and many owners confuse the curb weight, weight with boules or dry body mass, which leads to errors in choosing a trailer or outboard motor.
The AMG5 aluminum-magnesium alloy that these boats are made of is famous for its strength and corrosion resistance, but it is not without its considerable weight compared to modern composites. How much does a Kazanka boat weigh without boules? It is a feature of various modifications and why this parameter is critical to your safety on the water.
Understanding the exact mass of the hull is necessary not only for transportation, but also for correct calculation. passport capacityIgnoring the difference between the weight of the naked hull and the full package can be a fatal mistake when planning an exit in stormy weather or when the crew is fully loaded.
Design features and influence on the mass
The Kazanka boat hulls are formed by riveting, which affects the final weight of the product. Unlike welded ones, aluminum profiles and corners are used here, which add several kilograms to the total weight, but provide the necessary rigidity of the structure. The absence of welds reduces the risk of corrosion in the heat zones, but increases the number of connecting elements.
It is important to bear in mind that aluminum-magnesium alloy Boats produced in the 70s and 80s may weigh slightly more than modern replicas or rebuilt specimens due to the different thickness of the sheet of skin that was allowed by the GOSTs of the time.
It's also worth noting that the concept of "no boules" is key to owners of older versions. Boulies are welded or glued sealed compartments on the sides that increase stability, but significantly weight the boat. Removing boules (if the design allows) or their absence in the factory configuration radically changes the center of gravity and displacement.
⚠️ Attention: Self-removal of boules from boats where they are provided by the design (for example, Kazanka-2M) is strictly prohibited without subsequent alteration and stability calculations. This can lead to instantaneous overturning of the vessel when the cargo is moved sharply.
To understand the weight difference between boules and boules, we turn to comparative analysis, and the data can vary between 5 and 10 percent depending on the condition of the individual.
| Model boat | Boolean weight (kg) | Boolean weight (kg) | Difference (kg) |
|---|---|---|---|
| Kazanka- 2M | 100 | 85 | 15 |
| Kazan 5 | 190 | 150 | 40 |
| Kazankah-5M | 205 | 170 | 35 |
| Kazankah-5M2 | 215 | 180 | 35 |
Why is weight in documents and on scales different?
The difference is often due to the accumulated years of silt, water in non-silting niches, as well as the replacement of wooden cans with heavier or lighter analogues by owners.
Legendary Kazanka-2M: weight and specifications
This four-seat motorboat became one of the most popular in the USSR due to its versatility: the hull, 4.5 meters long and 1.6 meters wide, had no boules in the basic configuration, making it quite easy for its size. 85 kilogramsThis allowed to load it on the trunk of a passenger car without using special equipment.
However, many owners installed bulbous extensions (boules) to improve stability, because the narrow hull without them was prone to a sharp roll, installing such linings increased the weight by about 10-15 kg, but made the voyage much more comfortable, which is why it is important to visually assess the presence of welded elements when buying a used boat.
Aluminum sheets of skin thickness of 2 mm provided decent strength, but required careful handling in choppy conditions. The bottom It is reinforced with profiles, which also adds a few kilograms to the final figure, but protects the boat from impacts on the bottom when landing on shore.
When buying Kazanka-2M, be sure to weigh the boat on a car scale along with the anchor and equipment to really assess the load on the roof of your car.
Kazanka 5 series: evolution of weight and dimensions
With the Kazanka 5, the designers solved the problem of increasing the capacity by bringing the number of seats to five, and naturally, this led to an increase in size and, as a result, the weight of the body. 150 kilograms.
However, most of the released copies of this series have already been equipped with welded bules, increasing the width to 1600 mm and weight to 190 kg. Kazan 5 without boules, focus on the figure of 150 kg, but remember that finding a "clean" body in good condition is becoming more difficult.
The increased height of 720 mm required thicker sheets of aluminum at the top, which was offset by the thinner bottom, but the overall weight still increased. To transport such a weight alone, skill or the use of a winch was already required, which was the first call to the need for more powerful tractors.
- 🚤 The length of the hull is 4.58 meters, which is much more than its predecessors.
- ⚓ The width without boules is 1380 mm, with boules - 1600 mm.
- 🔩 The load capacity allowed to take on board up to 400 kg of payload.
It is important to note that sink-board This model was reinforced to fit more powerful engines, which also contributed to the overall weight. Aluminum alloys of those years held the impact well, but over time they could get tired, so excess weight was always the enemy of durability.
Modifications 5M, 5M2, 5M3: mass comparison
The further development of the lineup led to the "M" index, which meant modernization. outboard The Kazanka-5M, released in 1972, weighed about 170 kg in the no-boules version (though these were rare), but the standard version with boules was already 205 kg.
The 1976 version of the 5M2, which had a reinforced transom and a reshaped nose, has grown to 215 kg in its entirety. boulderlessThe, which is theoretically possible with artisanal rework or rare modifications, would weigh about 180 kg. However, factory versions almost always had Boolean extensions for safety.
Kazanka-5M3 was an attempt to combine the capacity with better seaworthiness. the weight of this model in the running condition reached 220-225 kg. The difference of 5-10 kg between the modifications of the "M" series is often due to the thickness of the rolled and the number of fittings installed. For modern owners, the difference of 30-40 kg between the "naked" body and the full can be decisive when choosing a trailer.
⚠️ Note: When calculating the load capacity of the trailer, consider not only the weight of the boat, but also the weight of the engine that is attached to the transom. For heavy 5M models, the engine can add another 40-60 kg to the load on the breather.
It is worth mentioning the model 5M4, which became one of the heaviest in the family. The increased size and reinforced body brought the weight to 230 kg. Find such a boat without boules is almost impossible, because the stability of a wide hull without them would be insufficient.
The newer the modification of Kazanka (5M, 5M2, 5M3), the greater its base weight due to the strengthening of the structure and increasing the dimensions.
Practical importance of weight for transportation
Transporting an aluminum boat on the roof of a passenger car is a task that requires accurate calculation. Kazanka- 2M Without boules, two strong men (about 85 kg) can still lift, older models weigh so much that their lifting becomes a dangerous occupation.
When using roof-racks, dynamic loading is necessary. A static weight of 100 kg can become a serious test for the roof when braking or hitting bumps. Aluminum is a tough material and does not cushion impacts like PVC, so all the energy is transferred to the car body and fasteners.
And the sailing of a long metal boat creates additional drag, which affects the fuel consumption and stability of the car on the track. If you plan to carry the boat often, the difference of 20-30 kg may seem insignificant, but when combined with the engine, the gas tank and the equipment, this weight becomes critical.
☑️ Pre-travel checks
Effect of weight on performance
The heavy body has its advantages and disadvantages. mass-inertia This allows the aluminum boat to keep the wave better and to scour less against the wind, and the light boat with the medium-powered engine will be constantly demolished, while the heavy Kazanka goes more confidently.
On the other hand, the heavy weight requires a more powerful engine to get on plane. For Kazanka-5M with a full crew and load, the minimum engine power must be at least 20-25 hp, otherwise the boat will remain in displacement mode, consuming fuel inefficiently. Lighter versions without boulders and unnecessary equipment require less power to start.
The draught of the boat is also directly affected by the weight: an empty boat sits high in the water, which is convenient for shallow water, but makes it vulnerable to side winds. A fully loaded boat sinks deeper, increasing water resistance, but becoming more stable. Balancing the weight inside the cockpit is a key skill for a heavy aluminum boat owner.
- 🌊 Heavy boats are better at cutting the wave, but worse at accelerating.
- ⛽ Fuel consumption increases in proportion to the total weight of the boat and cargo.
- 🛡️ A strong heavy body is more reliable when in contact with snags or stones.
And the light boat responds more quickly to the steering wheel, but also loses inertia more easily. Heavy Kazanka has a large turning radius, which must be considered when mooring in tight conditions or on strong currents.
FAQ: Frequently asked questions
Can I remove the boulies from Kazanka-5M to reduce weight?
Theoretically, if they are attached to bolts (which is rare), but if the boules are welded, cutting them will violate the tightness and integrity of the structure. Moreover, it is dangerous: the boat will become less stable and can turn over when rolled sharply. The weight loss will be negligible (30-40 kg) compared to the loss of safety.
Does Kazanka rust too much if you store it on water?
Aluminum-magnesium alloy AMG5 is resistant to corrosion, but electrochemical corrosion in salt water or in contact with other metals (such as steel anchor) is possible. Kazankas have been standing in fresh water for decades, but overgrown with algae, which increases weight and resistance.
What kind of trailer is needed for Kazanka-5M2?
For a model weighing about 215 kg plus motor (50 kg) and equipment, you need a trailer with a carrying capacity of at least 400-500 kg. It is better to take with a margin, since the trailer itself also has weight. Single-axle trailers for boats of the type MZSA or analogues will be perfect.
Is it true that old Kazankas are heavier than new ones?
Older boats may have been heavier because of the thicker metal, but over decades of operation they could have become overgrown with layers of paint, sealant and dirt. New replicas are often made from thinner but stronger rolled, so the weight may be less, but the resource of such a boat requires verification.
Does the weight of the boat affect the power of the engine?
The heavier the boat and the cargo, the more power it takes to get to the plane. For a heavy Kazanka 5M with a full load, an engine less than 15 hp may never put it on the plane, leaving it in displacement mode with high fuel consumption.
To sum up, the weight of the Boolean Kazanka boat ranges from 85 kg for the 2M model to 180 kg for the 5M series modifications. These figures are averaged, and the actual weight of a particular instance may vary. When buying or operating, always take into account the maximum values to ensure safety and comfort on the water.
Remember that Knowing the weight of your boat It's not just a reference, it's a basis for choosing the right engine, trailer and safety calculation, and don't neglect weighing, especially if you're planning long trips or going out on big water.