The Yuzhanka-2 is well-deservedly considered one of the most popular projects among boating and fishing enthusiasts. This small-sized boat made of duraluminium alloy attracts attention for its simplicity, maintainability and excellent driving performance in calm water. geometrical the body, as they determine the stability, capacity and power of the permissible engine.
Many newcomers mistakenly believe that the dimensions of all the Southerners are identical, but they are not. The differences in deck length, cheekbone width and board height can be as high as several centimeters, which significantly affects the choice of engine and cargo distribution. dimensionalitySo you can avoid mistakes when designing or buying.
Understanding the exact dimensions is not only necessary for assembly, but also for safe operation on a body of water. loading capacity and not exceed the permissible limits, which is a key factor in safety.
General overall specifications of the shell
The basis of the project "Southern 2" is a classic keel scheme with a pointed nose and a practically flat bottom in the stern. waterline The boat is 4.5 meters, which makes it a small pleasure craft, and the maximum width on board (overall) usually does not exceed 1.6 meters, which allows you to transport the boat on a standard trailer without special permits.
The height of the side is a parameter that often varies depending on the year of construction and the specific drawing. In the classical version, it is about 0.65-0.7 meters. float-stock It protects against splashes when driving, but requires careful attention to the distribution of weight of passengers. Duraluminum alloyThe hull is lightweight, which also affects the overall landing height of the vessel in the water.
⚠️ Note: When ordering or cutting metal, be aware that these dimensions are often “clean” (from the drawing). The actual dimensions may vary by 1-2 cm due to the thickness of the metal and the technology of welding or riveting.
It is also important to consider the dimensions of the transcent, as it determines the maximum permissible power of the engine. The standard height of the transcent for the Yuzhanka-2 is 380-400 mm, which meets modern requirements for the attachment of gasoline engines of medium power. throwing c cockpit or, conversely, to "striking" the nose during gleaming.
Detailed dimensional specification
For those who plan to build a boat DIY, it is not enough to know only the length and width. It requires a detailed specification, including the dimensions of the bottom sheets, spangoats and the forehead. Structural length (maximum) is usually taken to be 4500 mm, and the width of the mid-spangout is 1600 mm. These figures are the basic for all stability calculations.
Special attention should be paid to the size of the zygomatic stringers and corners that form the skeleton of the boat, whose length depends on the angle of keeliness, which in the bow is about 12-14 degrees, smoothly decreasing to the stern to 4-6 degrees. Southszhanka-2 confidently keep the wave and easily get on plane mode even with small motors.
Below is a table with the main dimensional specifications that must be strictly observed when making templates:
| Parameter | Value (mm) | Admission (mm) |
|---|---|---|
| Full length | 4500 | +/- 10 |
| maximum width | 1600 | +/- 5 |
| Height on midship | 650 | +/- 5 |
| Transcent height | 400 | +/- 2 |
Adherence to tolerances is critical to symmetry of the hull. If the starboard side is even a centimeter wider than the left, the boat will be constantly led aside when moving, which will increase fuel consumption and engine wear. pendant from plywood or cardboard to check geometry during assembly.
When cutting the sheets of duraluminum, leave a tolerance of 20-30 mm on each edge for later processing and editing the edges. This will save material in case of error.
Internal space and cockpit layout
The inner dimensions of the cockpit determine the comfort of the crew and the ability to accommodate equipment. The useful length of the cockpit in the Yuzhanka-2 is approximately 3.2-3.4 meters, if you count from the transom to the bulkhead of the runduk. The width in the area of rowing cans (seats) is usually slightly less than the maximum, and is about 1.3-1.4 meters, which allows you to comfortably accommodate two or three adults.
The height of the subdeck space also matters, especially if you plan to install a stationary fuel tank or battery. The standard height of free space under deck allows you to accommodate tanks of up to 50 liters without sacrificing a useful cockpit volume. Bulkheads In the nose and stern are not only for rigidity, but also for separation of compartments, which increases unsinkability.
When planning your internal arrangement, take into account the following parameters:
- 📏 Distance between banks: must be at least 60 cm for a convenient landing.
- 📏 The height of the runduks above the floor level: 30-35 cm for storing things.
- 📏 Width of passage to the nose: at least 40 cm for safe movement.
Incorrect layout can be dislocated centre If you overload the bow, the boat will burrow into a wave; if you stern, you risk being overwhelmed by a wave through the transom. So when you install additional equipment (echo sounders, navigators, anchor systems), always double check the balance.
☑️ Cockpit layout
Weight specifications and load capacity
The weight of an empty boat, the Yuzhanka-2, depends on the thickness of the metal used and the number of reinforced elements. On average, the weight of the hull without a motor and equipment is 160-180 kg. This is a fairly light indicator for a four-meter vessel, allowing it to be launched by two or three people or using a light trailer.
Load capacity is a critical parameter calculated based on the volume of water displaced and the buoyancy reserve. For the South 2, the rated carrying capacity is usually about 400-450 kg. This includes the weight of the crew, engine, fuel, equipment and anchor device. stability.
⚠️ Attention: The estimated load capacity is only valid if the load is evenly distributed. Concentrating the entire weight on one side can lead to a dangerous roll even without exceeding the overall limit.
When calculating the weight of the engine, remember that the more powerful the engine, the heavier it is. A standard gasoline engine with a capacity of 15-20 hp weighs about 40-50 kg, which is a significant part of the payload. Electric motors They can be heavier due to the weight of the batteries, which should also be considered when planning a fishing trip.
For accurate calculations, use a displacement-based formula. If you plan to take on additional equipment such as sonars, navigators or even a small refrigerator, be sure to weigh them in advance. Security The water depends on how well you feel the behavior of the boat under load.
Transport and storage
The dimensions of the South 2 allow it to be transported on a standard car trailer, the length of 4.5 meters does not require special permits for driving on public roads, and the width of 1.6 meters fits into the standard dimensions of the vehicle, however, overhangs and loading height must be taken into account when preparing for transportation.
When installing a boat on a trailer, it is important to correctly calculate the position of the supports. Keel rollers The body must be supported in the area of the frames to avoid deformation of the bottom during prolonged parking or shaking on the road. Incorrect installation of supports can lead to cracks in welds or curvature of contours.
Transportation recommendations:
- 🚛 Fixing: Use soft slings to avoid damaging the sides.
- 🚛 Overhang: the bow of the boat should not protrude beyond the dimensions of the trailer by more than 1 meter without additional signs.
- 🚛 Height: Consider the total height of the trailer + boat bundle for passing under bridges and power lines.
When storing the boat, it is better to put it on special slippers or goats that provide ventilation to the pallet. If this is not possible, and the boat is upside down on the ground, put wooden bars under the keel and cheekbones to exclude metal contact with soil and moisture. duraluminium corrosion resistant, but galvanic vapors with other metals or wet earth can cause oxidation.
How to prepare a boat for winter storage?
Clean the casing of algae and dirt, lubricate the moving parts of the machinery, remove the attachments, and leave the hatches open for ventilation to avoid condensation inside.
Comparison with analogues and modifications
The Southern 2 is often compared to other popular projects, such as Crimea or Ob, with the main difference being the narrower aft and lower bottom keel, making the Southern more wave-sensitive but fuel-efficient. The boat's dimensions are optimized for use on reservoirs and large rivers with moderate chop.
There are various design modifications where craftsmen change standard sizes, such as 20-30 cm longer bow lengths that improve swelling per wave, but require recalculation of the balance, and increasing the width of the transom allows for a more powerful motor, but reduces speed and maneuverability. Standard dimensions They are the result of years of testing and are recommended for repetition.
If you choose between buying a finished boat and building, note that factory copies can have deviations from the drawing sizes due to the features of serial production. Homemade boats made according to proven drawings, often turn out to be better and more reliable, as they are built “for themselves” in compliance with all technological standards.
The standard dimensions of the South 2 are the optimal balance between capacity, driving performance and ease of transportation. The change in geometry requires engineering calculation.
FAQ: Frequently asked questions
What is the maximum engine power for the South 2?
Officially recommended to install engines up to 20-25 hp However, many owners successfully operate boats with engines up to 30 hp, subject to the rules of loading and weight distribution. Excess power can lead to the destruction of the transom.
Can I increase the width of the boat when it is built?
Theoretically, it can, but it would require recalculating all the frames and skins. Increasing the width would improve stability, but it would impair driving performance and increase water resistance. It is recommended that you stick to the drawing dimensions to maintain design specifications.
What thickness of metal to use for the skin?
For the bottom and zygomatic sheets, it is recommended to use duraluminum 2.0-2.5 mm thick. The side can be sheathed with metal 1.5-2.0 mm thick. The use of thinner metal will reduce the life of the boat, and thicker - will unreasonably increase the weight.
Do I need to register Yuzhanka-2 in GIMS?
Registration is mandatory if the weight of the equipped boat with an engine exceeds 200 kg or the engine power exceeds 8 kW (about 10.8 hp). As the Yuzhanka-2 with an engine often exceeds these limits, registration will have to be carried out.