Water scooter. Drawing, description

PERSONAL TRANSPORT: GROUND, WATER, AIR
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Water scooter. Personal transport

Personal transport: land, water, air

Directory / Personal transport: land, water, air

In the times of the USSR, cultivated pastures were often arranged on collective farm and state farm meadows, on which irrigation systems were mounted.

With the collapse of the nearest collective farm, the irrigation system on such a meadow fell into disrepair. And duralumin pipes from it with a diameter of up to 250 mm and a length of up to 12,5 m remained lying among the grass.

Many have adapted these pipes for casing water wells, for chimneys (they look good in an "ensemble" with galvanized roofs) and even for a fence - they do not rot or rust.

Water scooter
The layout of the boat: 1 - bow eye; 2 - deck; 3 - hatch of the bow afterpeak; 4 - dashboard; 5 - cockpit; 6 - windshield; 7 - steering wheel; 8 - bank; 9 - motor niche; 10 - transom, 11 - side of the hull; 12 - "ski"; 13 - longitudinal redans; 14 - skids; 15- side fittings (sponsons); 16 - aft afterpeak hatch; 17 - handle; 18 - splash guard

Theoretical drawing of the hull (click to enlarge)

Water scooter
Joint scheme: 1 - outer side of the sponson; 2 - inner side of the sponson: 3 - skid; 4 - corner of rigidity; 5 - rivet

My friend, a nugget mechanic, guessed to use them as material for building boats.

We removed the accumulated soil from the pipes and cut them lengthwise on a circular cutter. As far as possible, the cut pipes were straightened with special devices - crowbars with hooks, then they were cleaned and knocked out with hammers and sledgehammers in the sand, and then on thick rubber, getting sheets flat or with the desired surface curvature. Thickness of sheets (pipe walls) - from 2 to 3 mm. Harder sheets were allowed on the bottoms and deck, softer ones - on the sides and side fittings.

For myself, I hastily riveted a flat-bottomed boat - a "ski" 1 m wide. Then I made another boat for my relative, then a catamaran, but it turned out to be too heavy and clumsy.

Finally, he approached his last boat, the Cardinal.

I designed and made it with the expectation that someday I will put a jet engine on it, the details for which I am slowly sharpening.

The hull of the boat is riveted with contours of the "semi-trimaran" type, has two side attachments (sponsons) with their keels at the back.

Feed - transom. An outboard motor is mounted on the transom. The poop deck is made with a recess for the future jet engine. A hatch is mounted in the forward part of the deck. Through it, empty plastic bottles are placed in the hold to increase

buoyancy of the boat and the necessary equipment.

The driver and passenger seats are equipped in the cockpit in the middle of the boat. The front of the cockpit is enclosed by an orange windshield. All devices are located on the front panel.

The deadrise of the boat's hull in the front, like the sponsons, is variable, in the rear it is constant and is 90 °.

To the sides of the hull in its underwater part at a height of 50 mm from the "ski" aluminum strips are riveted on both sides - longitudinal redans. The same strips are riveted around the perimeter of the boat, except for the transom - this is a splash guard - and skids to the keels of the sponsons.

The overlap of sheets of duralumin in the places of all joints is 35 mm.

Rivets with a diameter of 5 mm in the underwater part of the body - with a countersunk head, in other places - with a semicircular head. They are located in two rows (with a distance of 15 mm between rows) in a checkerboard pattern with a step of 20 mm. Such a connection of sheets did not even require sealing of the joints.

Once, about 25 years ago, using the same technology, I riveted four barrels for pickles from stainless steel sheets. The seams are still tight and the barrels don't leak!

The steering wheel was bent from a thin-walled steel pipe, the spokes were cut from a steel sheet 1 mm thick. All this was carefully welded to the "steering wheel" and painted.

As a result, a boat with a duralumin hull turned out to be not so heavy, but its advantages over wooden ones are obvious: high strength, durability, easy maintenance, lack of a power pack.

The sailing performance of the boat exceeded all my expectations. Under the "Moskva-30" engine, even with full "gas" from a place, the boat does not "rake up". At cruising speed, it glides on the heel of the ski and on the skids within their length of 350-400 mm (with one driver). With a sharp release of "gas", the boat smoothly sinks into the water, without even forming a wave.

Author: V.Pronin

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