Legendary aluminum-boat The Ob M, produced in Barnaul, remains one of the most popular boats in the domestic waters, and many owners are looking for the exact dimensions of this model to select a trailer, calculate the transport weight or plan for hull improvements. Although the original boats have been phased out, interest in them is not fading due to the time-tested design and availability of spare parts.
Understanding the exact dimensions is critical, as Ob modifications This article will cover the length, width, height and other key parameters that will help you make an informed decision when buying or operating this aluminum boat.
Knowing the exact weight and load capacity will allow you to safely calculate the number of passengers and equipment. "Siberia"which will be the basis for your calculations.
Basic overall dimensions of the body
The dimensions of the boat Ob M are classic for small metal vessels of that period. Body length The waterline and full length are key to the choice of parking space and trailer sizes, with a standard length of 4,550 mm, which makes this model a class of fairly roomy four-seater boats that can feel confident in the excitement.
The width of the vessel is 1600 mm, which provides sufficient stability, allowing even two adults to safely move on the deck, but when transported on the roof of a passenger car, such dimensions will require special remote mounts or the complete removal of the boat from the trailer, since the standard width of the road limits the possibility of transportation.
⚠️ Note: When calculating a parking space in a garage or parking lot, keep in mind that the actual width can be increased by welded beams or linings if the boat has been upgraded by previous owners.
The height of the side on the midfield is 700 mm. This is the optimal parameter, providing a good seaworthiness It also protects the cockpit from spraying even when it's moving against a wave, and the high side also improves the safety of passengers by reducing the risk of falling overboard when they roll.
Weight specifications and load capacity
One of the main issues for owners is the weight of the boat Ob M. The design of aluminum-magnesium alloys (AMG) provides a balance between strength and weight. The weight of an empty hull with equipment (without a motor) usually varies between 190 kg. This value can vary depending on the configuration: the presence of rundukes, the thickness of the metal and the state of the anti-corrosion coating.
The vessel has a carrying capacity of 400 kg, which includes the weight of passengers, engine, fuel, equipment and anchor equipment, and for a four-seater boat, this means that for each person with personal belongings, about 70-80 kg is left, which is enough for fishing or cruising, but requires discipline when loading heavy loads.
It is important to bear in mind that engine It's subtracted from payload capacity, and if you install a heavy four-stroke engine with a power of 20-30 hp, you can significantly reduce the number of passengers you can afford. Always make a pre-calculation before you get on the water.
Detailed dimensions of the cockpit and deck
The interior of the Ob M is designed to accommodate the ergonomics of the angler and the tourist, the cockpit is protected from splashes and headwinds with high foreshore and zygomatic allotments, and the working area of the deck allows two anglers with fishing rods on the sides to comfortably accommodate themselves without interfering with each other.
The dimensions of the cans (seats) and rundooks are also standardized, making it easier to replace interior elements. The front hazel trunk has enough space to store the anchor, ends and life jacket. The back of the cockpit is often used to accommodate fuel tanks and batteries.
To increase the useful volume of the cockpit, many owners dismantle the central kunduk, replacing it with removable drawers, which allows you to place the cargo more flexibly.
The height from the bottom to the hinge bar allows you to comfortably sit on banks, hanging your legs, or use inflatable seats. Floor construction provides for the presence of longitudinal and transom stringers, which not only strengthen the body, but also serve as the basis for fastening floorboards or plywood deck.
Transport dimensions and trailer
When preparing for the transport of the boat Ob M on a trailer, you need to consider not only the length of the hull, but also the length of the breathed vehicle. The total length of the vehicle with the trailer can reach 6 meters.
For safe transportation, it is recommended to use spring suspension trailers, since the aluminum hull is sensitive to vibrations at high speeds. Boat fastening should be carried out through the bow loop and aft moorings, avoiding pressure on thin parts of the side.
☑️ Checking the boat before transportation
It should be remembered that trailer dimensions If you plan to travel on the highway, make sure that the speed does not exceed 90 km / h to avoid dynamic loads on the transom.
Technical parameters and drawing data
For those planning repairs or tuning, dimensional accuracy is important, and below is a table with the main technical specifications that will help in the design of improvements or the manufacture of missing parts.
| Parameter | Meaning | Unit of measurement |
|---|---|---|
| Maximum length | 4550 | mm |
| maximum width | 1600 | mm |
| Height of board | 700 | mm |
| Hull mass | 190 | kilogram |
| Load capacity | 400 | kilogram |
These data are the basic for the series Ob M. Modifications with the prefix "M" (upgraded) are distinguished by improved welding and better aluminum, but the geometric dimensions remained unchanged to maintain compatibility with the tooling.
When making awnings or wheelhouses, you need to make allowances for fastening the frame. Drawings for the felling Often developed individually, but the binding goes exactly to the dimensions of the cockpit and the height of the board.
Design features and materials
The hull is made of aluminum-manganese alloy AMG, which has a high corrosion resistance. The thickness of the bottom and sides varies from 2 to 4 mm depending on the loaded assemblies. Welds are made automatically, which ensures their tightness and strength.
⚠️ Warning: Aluminum is susceptible to electrochemical corrosion when in contact with other metals in salt water. Use only stainless fasteners and zinc treads when operating in sea bays.
The design provides for the presence of zygomatic allotments that improve germination on the wave and reduce the impact load on the body. transom plate reinforced and designed for the attachment of motors up to 30-35 hp, but overload the stern is not recommended to avoid loss of driving qualities.
Secrets of durability Ob M
The main secret of the long service of the boat Ob M is regular washing with fresh water after use in salt water and storage in an inverted form or under a canopy to prevent precipitation from entering the hull, where water can stagnate and oxidize the metal.
The interior painting is usually done with epoxy soils that require periodic renewal. If you are buying a used boat, carefully examine the condition of the paint in the waterline and on the bottom.
Comparison with analogues and modifications
Ob M is often compared to the Kazanka or Voronezh, the main difference between the Ob and the larger cockpit and the better germination of the wave due to the contours of the hull. Compared to the older Ob, the M version received an improved design and more reliable fittings.
The size of the Ob M makes it a versatile tool: narrower than large boats, but more roomy than the classic Kanaks, a middle ground for an amateur fisherman who wants to feel confident in a large reservoir.
Choosing Ob M, you get a time-tested aluminum body with the optimal ratio of dimensions for transportation and capacity for fishing.
When choosing between used instances, pay attention to the geometry of the transom. If the dimensions of the transom plate are changed or there are signs of gain, this may indicate a previous installation of an overly powerful motor, which could lead to microcracks in the body.
FAQ: Frequently asked questions
What is the maximum weight of the engine to be put on the Ob M?
The official recommendation is to install engines up to 30 hp (about 50-60 kg) and exceeding this limit can lead to excessive stern differentiation, reduced speed and increased fuel consumption, as well as the risk of transom damage.
Will the OBUM fit into a standard garage?
At 4.55 meters, the boat will occupy a large part of a standard garage, requiring a garage at least 5 meters long to get around the boat, or need to install the boat on special brackets under the ceiling.
Should I paint the bottom of the Ob M?
AMG aluminum alloys do not require painting to protect against corrosion, because the oxide film protects the metal itself, but painting with epoxy or polyurethane paints significantly reduces algae fouling and facilitates cleaning.
How many people can be safely in the boat OBM?
Passport capacity is 4 people, but with a load capacity of 400 kg and the weight of the engine with fuel, the most comfortable in the boat feel 2-3 adults, and the fourth will be a little cramped, especially with fishing equipment.