Sail on a rubber boat. Drawing, description

PERSONAL TRANSPORT: GROUND, WATER, AIR
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Sail on a rubber boat. Personal transport

Personal transport: land, water, air

Directory / Personal transport: land, water, air

It is easy to turn an inflatable rubber boat into a sailboat. True, it will not be possible to install an ordinary mast on it, therefore, sailing weapons of a different type are used. Look at the drawing.

There is no standing rigging here. The spar consists of a base tube-crossbar 6, two mast tubes 4 and a yardarm 5.

The base pipe with a diameter of about 30 mm is inserted into the oarlocks of the boat 1. The ends of the tubes A of the double L-shaped mast are attached to its ends with bolts and nuts M5. The upper ends of the tubes are connected to each other and to the rail with a through connecting bolt and M5 nuts. The tubes that form the mast and yard are 15 mm in diameter and can be made from old duralumin ski poles. The rail can be made collapsible, and it is most convenient to place a connecting tube 200 mm long just at the junction of the rail with the mast.

A halyard loop is installed at the upper end of the yard. With its lower end, the rail is attached to the loop on the bow of the boat with a steel wire bracket with a diameter of 5 mm. The loop is a circle or rectangle made of sheet rubber 5 mm thick.

The yard is tilted at an angle of 60° (a smaller angle will worsen the performance of the sail on full courses, and a larger one will increase the pressure of the yard on the boat's hull). The dimensions of the tubes depend on the length of the boat. Having chosen the place for attaching the yard to the hull on the bow of the boat, measure the distance to the base pipe threaded through the oarlocks. For a double inflatable boat with a size of 2200 mm, this distance is 1000 mm. Therefore, the length of the mast tubes should also be taken equal to 1000 mm, and the yardarm - 1800 mm.

Screws 7 are made of duralumin 3 mm thick and put on the ends of the base tube protruding beyond the sides of the boat. Wooden cheeks - pads 10 mm thick (made of plywood or boards) give rigidity to the screws and reduce the angle of their deviation in the longitudinal plane. In addition, a pin with a diameter of 6 mm prevents the screws from turning relative to the axis of the base pipe. The position of the screws along the length of the base pipe is fixed with duralumin bushings, M5 bolts and nuts.

Sail 3 made of thin tarpaulin is an equilateral triangle with a side of 1750 mm, the top of which (head angle) is shifted to the bow relative to the base pipe by a size of 150...200 mm. The use of such a sail allows you to double the sail area on a full course. From the outside of the fold along the front luff (line V-D), a lyktros is sewn, with which the sail is fixed to the yardarm. There are eyelets at all four corners of the sail. Sheets 2 are inserted into the eyelets of the clew of the sail, and the same bracket is used to fasten the tack, which connects the lower end of the yard with a rubber loop.

The rudder is an oar threaded through a rubber oarlock fixed in the stern.

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