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PERSONAL TRANSPORT: GROUND, WATER, AIR
Aquarium boat. Personal transport
Directory / Personal transport: land, water, air Well, how not to help little Katenka to see how the fish swim! During a boat trip with grandfather Victor on the lake, she constantly hung over the side, trying to make out the underwater inhabitants. Grandfather, fearing that his granddaughter would inadvertently fall into the water, asked her not to bend over the water anymore. And he promised that next time they would sail not on this, but on their own boat, in which he would definitely make a special window so that Katenka could see fish through it. Viktor Dmitrievich Berezhnoy is a resident of the city of Valdai, in the Novgorod region. On the shore of Lake Vysokodno, in the country, he really has a home-made boat, which he once welded from several pieces of steel sheets 1 and 2 mm thick. Structurally, the boat is simple, and Viktor Dmitrievich spent only a few hours on its manufacture. First, he made cylindrical pontoons, and for this he welded two pipes from a steel sheet 1 mm thick and closed them from the ends with wooden plug discs. I used thick paint as a sealant, and screws as fasteners. Then, from the same sheet, I cut out and welded the hull of the boat with rounded sides and an inclined wave baffle and transom. The bends of the flat bottom near the wave baffle and the transom were reinforced with corner plates made of a 2 mm thick steel sheet. I connected the pontoons to the hull using six hoops made of steel strips with a section of 50x1 mm. The ends of the hoops covering the pontoons were welded end-to-end directly to the hull. Between the upper ends of the middle (oarlock) hoops and the body, I welded semicircular inserts from a steel sheet 1 mm thick. To these inserts, he later grabbed an M12 nut, into which he screwed and secured the oarlock rods with locknuts. To prevent the pontoons from moving, I connected them to the hoops with several welded currents. In addition, in front of the aft plugs, I drilled holes in the pontoons with a diameter of 10 mm each to drain the water (by the way, there should be some water in the pontoons all the time, otherwise the wooden plugs will dry out and lose their tightness). It should be noted that the contours of the boat turned out to be not streamlined at all. But Viktor Dmitrievich did not strive for streamlining. He needed the simplest watercraft that would allow him to slowly swim somewhere in the lake reeds and fish there. In the middle of the hull, I welded a cross-beam made of a steel 2-shaped profile, on which, after launching the boat into the water, I simply put a can (seat) - a piece of board with a section of 120x15 mm - I did not attach the can to the cross-beam so that it could be moved, since it was not suitable for all households the distance from this segment to the oarlocks. Two homemade oars are attached to the boat. Their blades are made of duralumin, from a sheet 2 mm thick, the spindles are wooden. The oarlocks are made up of sections of steel pipes with a diameter of 16x1,5 mm and shackles welded to them from a bar with a diameter of 8 mm. The oarlocks are connected to the spindles of the oars by axles made of a bar with a diameter of 5 mm, riveted on both sides. Tests showed that the boat easily holds two adult men on the water (Viktor Dmitrievich and his son Dmitry acted as testers). That's just when moving, the wave overflowed through the wave baffle or, when reversing, through the transom. I had to build up the wave baffle with a foam block, attaching it to the body with three elements of a steel strip with a section of 60x2 mm: two posts welded to the front corner plate of the body, and a belt, the ends of which (valves) are inserted into the slots in the foam block, slightly bent and welded to the sides and nose wraps. The belt simultaneously serves as a kind of bumper that protects the foam from crushing in case of unsuccessful mooring. In turn, the transom is extended with a "collar" made of a conveyor belt, attached with eight M5 bolts. Four central bolts also hold the door handle, designed for ease of carrying the craft. Grandfather promised his granddaughter to equip such a boat with a "aquarium" window. Fulfilling his promise, he cut out two L-shaped walls from a steel sheet 1 mm thick, welded a box without a bottom from them and folded the upper edges so that the child would not injure his hands. box. It really turned out to be an "aquarium", looking into which, you can see everything that happens right under the boat. In sunny weather, algae and fish swimming among them are clearly visible in the water. Granddaughter Katenka from the very beginning participated in the re-equipment of the boat. She participated, because she showed her grandfather what sizes of the viewing window would suit her. And she looked forward to testing the "aquarium", not forgetting, however, to ask again if the boat with such a hole would sink? Of course she didn't drown. There were so many children's delights that grandfather did not regret the time spent for a second.
Author: A.Nikolaev
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