And on a full-flowing river, and a small lake, and on a pond homemade catamaran will not only be fun, but also useful device. You can sunbathe on it, jump into the water from it, because it is almost impossible to turn it over. You can use your homemade catamaran to transport small loads, and also sail to inspect the fish cages. If you create a flotilla of such vessels, then it is quite possible to organize small competitions in speed or figure driving; they will also be an excellent means for making a small tourist trip.

What are we dealing with?

In order to assemble a catamaran with your own hands, you do not need any special materials - they are all available and very easy to process. If you do not take into account the metal elements, then you will need ZMM plywood and slats with a section of 15-25 and 25 * 25 millimeters and a length of 3 meters. This is the main advantage of the resulting raft, as well as its feature. It is best to use If this does not turn out to be the case, then it is better to purchase birch, however, even in its absence, it is permissible to use spruce or aspen.

If you seriously decide to make a catamaran with your own hands, then choosing plywood is a very important step, because the durability of your boat will depend on it. Naturally, it is also important to show diligence in terms of careful finishing of individual parts, as well as their connections. The plywood should be soaked while heated. It is best applied on a hot sunny day using a wide brush. Heating of drying oil should be done exclusively in a water bath using a wide bowl of boiling water. Of course, it is important to remember to be careful, because a burn from a hot substance is quite painful. You can complete the impregnation operation after the drying oil stops being absorbed into the wood. Typically, application is carried out two to three times with intervals of several hours.

Structural elements

So, when understanding the question of how to make a catamaran, it’s worth considering everything in order. The raft's pontoons are made of slats and plywood. It’s worth starting with the frames. To do this, you need to cut 12 blanks from plywood, the dimensions of which are 320 * 320 millimeters, knock them down with three or four nails, and then process everything together along the contour. Next you need to make slots for the slats. The slats are square, but the slots should be 20-25 millimeters in size. The remaining 5 millimeters in the slats are equipped with grooves. It is best to lay all six slats side by side, secure them, and then use a saw to make cuts in all of them at the same time. Since they will turn out to be a little deeper at the edges, it is worth leveling the average depth by shifting the boards several times during the work process.

Before forming grooves, it is worth checking the dimensions of the plywood sheets. If we're talking about If the number is less than 1500 millimeters, then it is necessary to adjust the installation location of the cross member 7 and frame 5 accordingly. Six frames require pieces of slats to be attached to them from the sides and top, and a piece of board should be attached to the bottom. Everything must be done as firmly as possible; it is better to use screws or screws for this, because nails will be driven into the slats, the task of which will be to hold the plywood.

Vessel assembly

If you decide to make a catamaran with your own hands, you will need to prepare several slats. The length of four of them should be three meters, two should be 1.9 meters each, you will also need four segments of 570-600 millimeters each, after which you can begin further work. It is clear that it is worth placing a pair of upper slats below, which will allow the frames to sit firmly in their place. You can immediately fasten a couple of cross members with screws, and then lay the keel rail, screwing it to frames 1, 5 and 6. Next, you can turn the catamaran frame on its side to secure the upper rails to the same frames.

You will need a board 50 millimeters thick to cut out the stern and bow bosses, and here it is important to take into account that their shape should be cone-shaped. And then they need to be inserted into place, having first tied the top slats with wire. On the bow and stern overhangs, the keel rail is made from several scraps.

Sheathing

Now it's time for this important element like cladding. To make a catamaran with your own hands, you need to cut out several elements. The width of the central part is 823 millimeters, cutting it out is not difficult. It is easy to bend it to the shape of the frame, since it has already been impregnated with drying oil. But it’s important not to rush here. To make the work easier, you need to tighten the workpieces with wire, ropes or something else, and then leave them in this position for several days. It is worth noting that plywood should be fastened with nails, but it is first necessary to coat the fastening points with thick paint on the slats, frames, and also in the corresponding places of the plywood. Most diligently you should coat the joints on the frames.

Continued assembly

If you are making a catamaran with your own hands, the drawings have already been carefully thought out, then next, using a cardboard template, you should determine the shape of the blanks for the overhangs. This should look like a cone. They are installed similarly to the previous elements. The plugs should only be attached to the paint. Their contours should be specified based on the finished skin. The 9-11 slats should be nailed to the paint, like all other parts. Next, you can cut out the deck by tracing the outline of the almost finished pontoon. Once the deck is nailed down, the pontoons can be completed. During the installation process, you should not skimp on paint.

Deck

The easiest way is to make it from the same plywood as the other parts. For strength from below and above, it is worth nailing the slats in increments of 300-350 millimeters. If you don't trust the strength of plywood, you can lay it in two layers, placing one on top of the other. Where the pedals will be installed, it is necessary to adjust the rack pitch accordingly. Naturally, speaking about how to make a catamaran, it is worth noting that it is appropriate to use other materials for the deck, for example, thin boards that will be nailed so that there is a meter wide space between the pontoons.

Working part

If you decide to make a catamaran with your own hands, then the propeller drive should be made from parts from a bicycle. You will need to use a pair of frames with carriage assemblies and pedals. The cut ends of the frames should be flattened and then attached to the deck rail using screws. Spacer bushings, the length of which is 120-130 millimeters, must be installed between the pedals, and the pedals themselves must be connected by long common pins.

Equipped with paddle wheels, which are made from bicycle wheels. The blades should be cut out of rubber, the thickness of which is 4-6 millimeters, and then tied with wire to the knitting needles. One wheel should be equipped with five to six blades.

Functional area

The seat is made of plywood and slats, the cross-section of which is 25*25 millimeters. The seat is secured to the deck after the propeller drive is installed - so that the slats below are not accessible to the tensioned chain. It is best to fasten the elements with screws, since it is quite possible that the position will need to be adjusted.

So, you make a catamaran, the photo of which you liked. Next you should make steering, this will also require slats and plywood. The dimensions of the handlebars are 200*320 millimeters. A plywood bracket with sides of 200*200 millimeters should be nailed to the right one using slats, and then a rod should be sent from it to the lever, which should be installed on the side, in the immediate vicinity of the seat. The axes of the longitudinal and transverse rods can serve as thick nails, for which holes must be drilled with a drill, otherwise the rods may burst.

Final stage

There should not be any particular difficulties in assembling the catamaran. The pontoons must be installed on a level place, after which you can lay a deck on them, mark the mounting locations for bicycle frames with pedals, a rowing drive and a seat. But there is no need to rush to secure all these knots. All wooden parts of the raft must be painted with three layers of oil paint. Since each layer takes a day or two to dry, you will need a week for this operation.

When painting is completed, all components should be installed in place. The seat is mounted at the end. To tie the catamaran to the pier and to make it easy to carry, it is worth screwing 4-6 door handles on its sides.

Several videos show how the master, the Author of the channel “Alexander Sedoy,” conceived and implemented the idea of ​​​​building a high-quality catamaran from polystyrene with his own hands. The task was set, the swimming device should be:
1. Unsinkable.
2. Indestructible.
Z. Cannot turn over.
4. Foldable, with the ability to be transported on the trunk
small passenger car.
5. Decent dimensions for comfortable swimming.
b. The draft is half that of a kayak.
7. Lightweight, each part should not be heavier than 20 kg.
8. Get ready quickly and easily.
9. Roomy.
10. Lifting capacity, not less than 700 kg.
11. Autonomous, several sleeping places, place for fishing and barbecue.
12. Possibility of installing a motor up to 10 p.s. on a catamaran.

Choice of float material.
First I bought penoplex “Comfort”. Width 100 millimeters. I bought a package. Weight 18.7 kilograms. Cubic capacity 0.28.
Ultimately, the master settled on URSA. Noble material, pleasant, comfortable to work with. Thickness 50 millimeters. The weight turned out to be 15.7 kilograms. Cubic capacity 0.3. The cost of one package is 1200 rubles. The weight of 1 leaf of ursa is 1.1 kilograms. Why 50? I read that, of course, gluing a weave is easier, 2 times faster, but the more intermediate layers - stiffeners, the stronger design catamaran Therefore, I settled on a sheet width of 50 mm.

The purpose of the catamaran is to sail together with the kayaks. Therefore, the draft should be no more than 3-5 centimeters. The kayak has up to 15 - 17 centimeters. Maximum comfort for fishing. The structure must be completely dismountable, each part no more than 2 meters long. As easy as possible.

First, let's prepare a device for cutting edges. Nichrome thread will be used. At the same time, the walls are baked, they become smooth. Extra rigidity and moisture resistance will not hurt. You will need exactly three packages of materials. 50 x 125 x 600.

The most important thing is that the spiral is securely fastened, otherwise the size will float away. If the spiral is held clearly all the time, all the details will be exactly the same. Smooth adjustment of “light attenuation” occurs with the help of a 220 to 5 volt transformer. The device cuts the material like butter, but it is important that the thread does not get red hot. The voltage supplied is 1.5 and 2 volts. With manual feeding, ideal boundaries are unlikely to be achieved. But this is not required. The work takes place without dust, noise, quite smoothly and neatly. URSA material must be fed smoothly.
The master showed how the nichrome thread differs from the factory thread.

Now cut it exactly in half without stamps. If the spiral does not heat up red-hot, the material does not give off any odor. The device works great. Why is the cut done in half? Because I decided to make it not transverse, but longitudinal. Thanks to this there is no waste. Except for the edge. The edge is cut to length on both sides. The side edge is cut from only 12 sheets out of 24. Another advantage: no stamps are needed. It became possible to increase the length of the catamaran by 1 meter. I had to buy three more sheets, so I ended up with three packs and four sheets. Total 24 sheets. Additional 100 kilograms displacement. Reducing draft and increasing speed. Simplification of product installation. Perfectly smooth and Smooth surface. Saves putty and glue several times. Reducing work by an order of magnitude. Much better in strength than a cross set. Longitudinal set in a checkerboard pattern.

The second part of the video is about the construction of a homemade catamaran. The float panels are joined together on each side. The blanks are treated with waterproof products.

Part 3 is about building a catamaran from polystyrene.

part 4

We are waiting for the final 5th part with tests of a homemade catamaran on a pond, which the author will post, presumably, in the spring or summer.

The girls took off their tights and there was a noticeable smell of spring in the air; soon the reservoirs would be free of ice and the water season for homemade swimming equipment would begin.
In today's article, I propose to start making a homemade catamaran.
Such a catamaran can be easily transported in the trunk of a car; it does not need to be registered as it is not rowing boat because it has a pedal drive.

It is convenient to fish from a homemade catamaran - it is very difficult to turn it over, high chair allows you to stretch your legs or tuck them under you; you can fish standing on a catamaran without fear of falling into the water from the breeze.

In general, there are nothing but advantages, so we look at the drawings of the catamaran and, taking the materials, we begin to make the watercraft with our own hands.

The catamaran is assembled from two hollow floats, each having a length of 3000 mm, a width of 200 and a height of 250 mm. The floats are connected to each other by a bridge made of duralumin corners 30X30 mm (cross members) and 20X20 (longitudinal connections), riveted into one piece. The bridge is equipped with a driver's seat 7, foot drive pedals 4, a chain drive with an intermediate sprocket (node ​​3) and a propeller - a paddle wheel (node ​​4) with six platters (blades), covered on top with a metal casing. To control the rudders 13, a handle 6 is installed under the driver’s left hand. By moving the handle, the catamaran turns to the right, and by moving it to the left. Big square interconnected rudders make the catamaran very maneuverable.

The floats have a frame of nine rectangular frame frames (they can be made of either wood or aluminum corner) and four longitudinal elements (stringers) located at the corners of the frame frames. The floats at the front and rear end in straight stems. The frame is so simple in design that it can be assembled even without a slipway, on a flat floor or a large table. The casing (if the frame is metal) must be made of light alloy sheet material. It is installed on rivets, with a sealing tape laid along the seam (in the absence of a special tape, you can use household cotton tape with a thick grease oil paint). First the bottom is riveted, then the sides. After this, the inside of the float must be puttied along the seams and painted. IN last resort The deck is installed on M5 screws with countersunk heads (near the inspection hatches, where you can stick your hand inside, the deck should be riveted).

After cleaning, the finished floats are carefully puttied along the seams and painted in the desired color. Before painting, the metal surface must be degreased and treated with fine sandpaper.

In the case of making floats from wood, the frame frames are assembled from 35X15 mm pine bars on gussets. Longitudinal stringers made of pine with a cross-section of 20X20 mm can be attached to the frames with screws or strong nylon threads with epoxy glue. The latter method is very simple and does not weaken the structure at all, besides providing some weight savings.

Sheathing wooden frame made from three-layer plywood plywood 2 - 3 mm thick, with epoxy or casein glue. The direction of the layers is longitudinal along the bottom and sides, transverse along the deck. The plywood is pressed in with thin nails and screws 15X2.5 mm.

The finished float is carefully cleaned and covered with one layer of fiberglass on epoxy resin. If these materials are not available, you can use regular cotton calico and glue it with nitro glue. Before pasting, all corners and edges of the float body must be slightly rounded with a hog file so that the fabric does not rub off longer during operation.

As practice has shown, a bicycle catamaran is especially convenient for fishermen and hunters: it is very stable, easily passes through dense thickets of aquatic plants, is completely silent and hardly noticeable on the water. You can use it to make long casts with a spinning rod, fish with float rods, jigs and mugs. Transported on a standard, industry-produced roof rack. For this purpose it is installed wooden frame with pads made of foam rubber or porous rubber, on which the bicycle rests with the bottoms of the floats. Fastening to the trunk is carried out using hooks with gramophone-type fasteners. This design allows special effort It takes two people to install and remove it from the trunk. To prevent unnecessary air resistance during transportation, the driver's seat is removable and the control handle is foldable.

When building a bicycle catamaran, the majority metal parts You can make your own or use some standard bicycle parts that are sold in stores.

G. OVCHINNIKOV, engineer

Bicycle catamaran: 1 - deck, 2 - side stringer, 3 - frame frame beams, 4 - drive sprocket with pedals, 5 - drive chain, 6 - rudder control handle, 7 - driver's seat, 8 - seat back brace, 9 - propeller casing wheels, 10 - longitudinal tie rod, 11 - steering head, 12 - transverse tie rod, 13 - steering wheel.

Chain drive parts: node 1 - fastening the pedal pylon to the bridge, node 2 - cut along the axis of the pedals, node 3 - cut along the intermediate carriage axis, node 4 - cut along the axis of the paddle wheel.

Hull section A - A: 1 - frame frame of the float, 2 - transverse connection (bend 30X30), 3 - longitudinal connection (angle 20X20), 4 - T-shaped spars.

Section of the body B - B: 1 - float, 2 - propeller wheel casing, 3 - paddle wheel plate (blade), 4 - drum axis, 5 - driven sprocket.

Source: "Modelist-Constructor" 1975, No. 9

The asshole comments:

Damn, lame note.

Law comments:

Dear respect

The designer comments:

Modelist-Constructor is an excellent magazine!

Anton comments:

This catamaran is suitable only for children
from 10 to 15 years.
And for adults you need more than 3 times.

comments:

Fucking commentators, they didn’t do anything themselves, but here they are crap on everything

Artem comments:

Agree! If you criticize, show how you can do better!

Andr comments:

Now you don’t have to bother with plywood, just cut out insulation from foam panels, such as penoplex. You can take 5 cm of width and cut out the blanks of the sides and glue them together.

For strength, cover the top with fiberglass on epoxy or yacht varnish.

At fastening points, you can use pads made of waterproof plywood or plastic.

Inflatable catamarans differ quite greatly in hull type. Today, planing modifications are considered the most common. Additionally, displacement configurations are available. Assembling a catamaran on your own is quite difficult. However, if you pick up everything necessary materials, then this can be done. It is also important to adhere closely to the drawings during assembly. To study this issue in detail, it is best to familiarize yourself with the most interesting models of catamarans that exist.

Modification with rowlock

To assemble an inflatable rowlock (the drawings are shown below), first of all, two floats are prepared. They must be at least 3.5 meters in length. The oarlock itself is designed to hold the mast. After securing the floats, you can proceed to the steering column.

For this, a pipe with a diameter of about 3.5 cm is most often used. Next, a stock is installed on the float. To secure it properly, you need to use beams. Next you need to install the stringer. The steering column is mounted only after the tiller. It is chosen most often rectangular shape. The locker should be installed with great tension. For the mast, a pipe with a diameter of at least 5.5 cm is taken. The sail is selected separately in this case. In the end, all that remains is to secure the tensioners.

Model with mooring beam

To assemble an inflatable catamaran with a mooring beam with your own hands, floats are installed as standard. The distance between them must be at least 1.2 meters. Only after this will it be possible to install the stock. In this case, beams must be selected with stops. At the next stage it is important to prepare the beam. It must be installed along the float.

The locker in this case should be located above the boom. After this, the catamaran deck itself is knocked down. Next, you can install the mast. For this purpose, a corresponding hole is made on the beam. Direct fastening must take place with the participation of tensioners. Then you need to install a tiller to control the catamaran. At the end of the work, all that remains is to tension the sail.

Catamaran with ropes

The model is assembled with a stretcher (drawings of the inflatable catamaran are shown below) quite simply. In this case, work must begin with calculations of the length of the floats. As a rule, they are prepared with a diameter of about 0.5 meters. After this, you can begin installing the stringer. For this purpose, it is first necessary to install the stock. As a rule, it is used in a rectangular shape. Next, it is important to immediately attach the stand to it.

A tiller can also be connected for control. The next step is to knock down the deck on the catamaran. For this purpose, boards 1.2 meters long are suitable. The locker is installed only after the boom. The guy wire should be mounted directly on the swivel. To do this, you need to prepare four screws. At the end of the work, the mast is installed. You also need to take care of the tensioners.

Model with centerboard (PVC)

Inflatable PVC (polyvinyl chloride) catamarans with centerboards are quite common these days. In this case, it is more appropriate to start work by installing the beam. After this, it will be possible to fix two floats. Beams for catamarans are most often wooden. However, they can also be made from aluminum plate.

In this case, stringers must be selected with a length of at least 3 meters, but much in this situation depends on the width of the floats. The next step is to install the stand. The centerboard is attached directly to it. It is necessary to control the catamaran. You can change its position thanks to the tiller. It is installed on the stand using screws. At this stage it is very important to securely fix the support.

Reviews of catamarans with a locker

Homemade inflatable catamaran of this type Today it is quite rare. Underarms are designed to control the model. If you believe the reviews, when assembling it is initially important to secure the floats. Regular ones are suitable for this. wooden boards. In this case, you can use a wooden baller.

The minimum length of the stringer should be about 2.5 m. According to experts, beams on a catamaran are installed only after the rack. The tiller for the model cannot be selected big size. At this stage it is important to securely fix the tensioner. This can be done using wrench. Then the undercoat is installed. You can secure it to the stand using screws. However, it should not block the swivel.

Modification with longitudinal beams

With longitudinal beams, the inflatable catamaran (photo shown below) is very durable. In order to assemble the model, you need to prepare two floats. They must be at least 4.5 meters long. After this, the stringer itself is assembled. You can weld it yourself using a pipe with a diameter of 3 cm. After this, it will be possible to install a stand. For this, boards should be selected about 1.3 meters long.

The best tensioners for catamarans are the steel type. The beams at this stage must be laid very carefully. Their front part should face towards the deck. To fix them, many experts recommend using screws. After securing them, all that remains is to install the hook with the mast.

Reviews of models with transverse beams

With transverse beams, the inflatable catamaran has mostly positive reviews. Assembling the model must begin with the preparation of two floats. If you believe the reviews, they must be at least 35 cm in diameter. The next step is to secure the stock. Beams in this case are used only with supports. Their thickness should be at least 2.2 mm. After this, the stringer is directly fixed. It must be at least 2.5 mm in diameter. The next step is to install a stand on the catamaran. According to experts, its minimum height should be 1.2 meters.

To make it yourself, you need to use metal pipe with a diameter of 2.3 cm. After this, a steel locker is attached to the catamaran. It is important to use screws to secure it. They will fit with the M6 ​​marking. In this situation, a small tiller can be used. Next, all that remains is to fix the boom. For this purpose, first of all, the tension is installed, and then the swivel is fixed. After this, you can mount the mast directly. The sail must be selected separately for the catamaran. When assembling tensioners, many experts recommend using small widths.

Catamaran with winding seal

Inflatable catamarans of this type are considered quite common today. The floats in this case are fixed rigidly. It is necessary to begin assembling the model by marking the future deck. After this, the float is fixed. In this situation, it is important to select a solid type baller. Its maximum thickness should be 2.3 mm. Many experts recommend using aluminum beams. They have fairly little wear. It should also be taken into account that stringers are selected based on the width of the floats.

The tiller, in turn, should be 1.2 meters long. Otherwise, driving the catamaran will be uncomfortable. The tiller stand must be made from steel pipe. It should be at least 2.3 cm in diameter. The boom in this situation is aluminum. Winding the seal must begin from the tiller side. At the location of the rack it will have to be interrupted. In this case, it is important to fix the seal using a tensioner. Then the swivel is attached. Next, the winding needs to be extended to the bow.

Assembling the device with a stopper

Inflatable catamarans with a stopper are not easy to fold. The problem in this case is finding the right baller. Its minimum thickness must be 2.3 mm. You can make it yourself from a steel plate. To do this you will have to use welding inverter. First of all, a rectangular sheet is cut out. Next you need to weld two supports. Their height should be no more than 3.4 cm.

All this is necessary in order to be securely attached to the boom. Next, the stringer is folded. It is important to use only aluminum pipe for this. In order to secure the stopper, you need to prepare four screws in advance. First of all, the holes on the stringer are faked. The first of them should be located at a distance of 2 cm from the front edge. The remaining three holes for the stopper are made at the rear. Next, it is important to secure the stopper using tensioners.

Models with duralumin sheets

To assemble inflatable catamarans of this type, you need to prepare four sheets. However, first of all, experts advise taking measurements of the floats. Their minimum length must be 3.5 meters. After this, the deck is fixed. It's quite easy to make from boards. In this case, their minimum length must be 1.2 meters. After this, you can immediately install the stand. At this stage you will have to use a welding inverter. The support should be located directly above the stand.

The sheets are laid on the tiller side. In order to prepare the deck for this, it is important to install the swivel right away. Many experts recommend using steel tensioners. The sheets can be secured using screws marked M6. Additionally, you need to install clamping rings for better fixation. After installing the sheets, it is necessary to begin manufacturing the mast. Then all that remains is to lock the tiller to control the model.

Fishing becomes comfortable and effective when using swimming devices that allow you to fish anywhere in the river and quickly move around the reservoir. Catamarans for fishing are especially popular among lovers of quiet hunting.

The advantage of a catamaran is its light weight structure; it can be transported by passenger vehicles. Inflatable models are packed in a special backpack, and the non-disassembling parts are secured to the roof of the car. The models are characterized by easy movement at any speed and stability on waves.

A popular remedy for fishing— catamarans for fishing under motor. It allows you to expand the range of fishing spots, you can choose the best sites for biting. Assembling and disassembling the catamaran can be done by one person: its parts are assembled within half an hour, which makes the device mobile and convenient.

The deck is half a meter higher than the water surface, which saves fishermen from the waves, and rainfall does not accumulate inside the frame. There is no need to bail out the water; it drains into the gaps of the deck, making the catamaran easy to wash. From below, inflatable catamarans are protected by a beam from rubbing against the surface of the bottom or shore of a reservoir.

The main advantages of a catamaran-type vessel are:

• high frame stability;
• spacious and high deck;
• high load capacity;
• durable bottom;
• large air compartments;
• easy assembly and disassembly;
• easy care and cleaning from dirt;
• safety of use.

Specifications

The catamaran consists of two air cylinders and a frame, which can be inflatable or rigid, made of aluminum. When assembled, the entire structure fits in a backpack, which is convenient for transportation.

The weight of the craft often does not exceed 20 kg. Motor catamarans are heavier because they have a stronger foundation, but they also use lightweight materials in their construction. The dimensions of the products are different, they reach a length of 4-6 meters.

Sustainability

The catamaran is a stable structure; it easily rides the wave, receiving a minimum of impacts. Spray formation is small at any speed, which is comfortable for passengers. With a wave height of 0.5 m, the stability of the structure is superior to other models. Catamarans are stable on course and easily maintain a given trajectory.

The watercraft is able to withstand the influence of external forces, its lateral stability resists the forces of the turning moment. Longitudinal stability resists piles on the stern or bow - a longitudinal turning moment (turning over the stern). Long distance between cylinders and proper weight distribution increase the stability of the product.

The safety of a catamaran is greater than that of boat models. The stability of its structure is much higher. Boat overturns are possible when there is a load on board, which often happens when fishing for fish when the craft rolls. Using inflatable structures, even several people can be on the same board without the danger of it tilting or capsizing. This craft cannot be capsized or sunk.

Usable space

Catamarans are much wider than single-hull models, resulting in almost twice the usable space of boats. Decks with a width of 2 m can be from 2.5 to 4 m long; an awning or tent is installed on a large area.

Fishermen place a table and chairs (armchairs) on the deck area, as well as fishing equipment and everything necessary for the trip. The deck is of sufficient size allowing you to move freely inside the catamaran. The models have a comfortable tension or rigid deck that can accommodate from 2 to 10 passengers.

Economical

Due to their design, catamaran models have reduced drag. Their weight is divided between air corps, which creates little drag compared to boats. The speed of a catamaran is 20-40% higher than that of a boat with the same load.

Catamarans accelerate to 20-25 km/h when using smaller engines that consume little fuel. The fuel consumption of these models is one third lower than that of boats. Fishing models have a transom for a motor up to 10 hp, but they often use small engines from 2 to 5 hp.

Load capacity

A loaded craft can dive below the optimal depth, but overloading a catamaran will only worsen its speed characteristics: for it to sink, the cargo must be three times its carrying capacity. This means that with a carrying capacity of 500 kg, an overload of up to 1500 kg will be critical for this craft.

Catamarans have a carrying capacity of 300 to 500 kg; the load does not affect its stability and speed. Despite their light weight, the models have a large carrying capacity; they can accommodate boxes for transporting catch, fishing equipment and many other necessary loads. The number of passengers is from 2 to 10 people. Unsinkability under overload - big advantage catamaran design compared to boat models.

Maneuverability

The maneuverability of the vessel is its agility when maneuvering to the right or left of the geometric center of the structure and the possibility of reverse movement. Catamaran structures have good maneuverability—quickly turning and returning to their original position. The raised bow and stern increase the maneuverability of the vessel.

Types of catamarans

Types of catamarans differ in technical solution parts of the vessel:

• deck arrangements;
• installation of transverse beams for floor rigidity (beams);
• supports different heights.

With flexible and rigid locker

The description of catamarans contains information about materials for deck construction. The locker of a catamaran can be flexible or rigid. Models with a flexible locker are easier to stack during assembly and transportation, while rigid structures are more reliable and convenient to use, but take up a lot of space during transportation.

The tension deck is made of PVC fabric, lined around the perimeter with slings with loops for fastening to the frame. The boom of these catamarans is of medium thickness, the air valve is near the stringer, and the fasteners are cross-shaped. Flexible types use polyvinyl chloride (PVC) material with high density— 800 g/sq.m. Large cylinders can be installed on these models.

Rigid locker structures are made of boards, plywood and other dense but lightweight materials. Two supports are attached under the model, the cylinders are located with different sides stringer, density used PVC materials— 700 g/sq.m. The supports are attached above the firmware, air valves— over the boom. There are options with stockers, the cylinders in which are installed above the boom. On vessels with a rigid locker they fish in shallow water.

Models for two and three beams

Catamaran models for fishing have two or three beams that serve to strengthen the structure. The higher the protection of the frame, the greater the passenger capacity and other technical characteristics.

Models with two beams - for two passengers. The supports are installed at a low height. Load capacity - up to 300 kg, vessel length - up to 3.4 m, stringer diameter - 1.3 mm, cylinders - rubber patches, fastening - in the form of crosses. Can be equipped with flexible lockers. These designs are in demand among fishermen.

Catamarans with three beams are four-seater. Load capacity - up to 500 kg, air valves - near the stringer. The lockers are hard, sometimes the boom is made of rubber. Vessel options with two legs are popular. These flotation devices are made of high-density materials.

With low and high support

Supports of different heights affect the installation of motors of different power. Small models have low technical specifications, large vessels with powerful engines - higher quality characteristics.

Models with low supports are designed for installing low-power motors. Their carrying capacity is 300 kg, the air cylinders have a small diameter. It is possible to use rubber booms and ballers. The stringers are attached to PVC pads.

To use powerful motors, catamarans with high legs are produced. These models have a rigid aluminum frame, cylinders large diameter(density - 800 g/sq.m), stringers 1.4 mm thick. The supports are additionally secured with braces. The length of such a catamaran reaches 4 meters.

Inflatable catamarans

When moving, the inflatable catamaran comes into contact with the water only with its cylinders; the deck and frame remain above its surface. This reduces water resistance and increases speed. Nowadays, balloon chambers with high pressure(250−300 mbar), in the manufacture of which reinforced PVC materials are used.

The use of single-layer cylinders made of durable materials reduces the weight of the craft and increases their rigidity. Inflatable catamaran models expand the capabilities of fishermen; with their help, users of a collapsible vessel get into the most inaccessible places of the reservoir, delivering the craft to the shore using personal vehicles.

How to build a catamaran with a motor with your own hands

Only a good craftsman can construct such a craft on his own. But sometimes a do-it-yourself catamaran becomes better than the factory version; the owner has the opportunity to adjust the parameters and characteristics of the vessel to his needs.

First, the future model is designed: its detailed drawings are created, after which general drawing is divided into separate drawings of all parts of the vessel. Then a frame is made (usually from duralumin). Next stage— production of air cylinders from durable PVC, of ​​specified dimensions (length 3.5−4 m). The cylinders are equipped with valves for air injection.

IN homemade version You can install the stock with tension. The assembly of the structure is completed by installing the stringers and deck. Important stage design - checking all parts of the craft for reliability. Special attention You need to pay attention to the tightness of the air cylinders. A high-quality homemade catamaran is always the pride of the owner.