A Boat SVG is a small vessel. In the Naval Dictionary, a boat is defined as a vessel up to nine metres long, up to three metres wide and with a load capacity of up to five tonnes. As a rule, boats are rowing boats, but there are also sailing boats, but small sports sailing boats are usually called yachts. The boat can be equipped with a motor (the motor can be either an auxiliary or a main source of energy). According to the classification adopted in most countries, motor boats are referred to as outboard boats. Small vessels with stationary motors are more often called boats.
The basic material for boat production is light alloys (usually duralumin), wood, composite materials and polymers. Boats made of composite materials are usually called plastic boats. A special type of boat is inflatable boats. RIB (rigid inflatable boat) boats are inflatable boats with hard bottoms and inflatable sides, providing unsinkability.
Currently, boats are used for rest, fishing and cargo transportation from ship to shore where there are no berths, movement through populated areas during floods and as a lifeboat.
Hydraulic planes with a displacement fuselage are called flying boats.
In addition, the term “boat” has traditionally been used to refer to certain types of ships that have long been inconsistent with the definition of a boat (submarine, canoner).
Boats and other vessels which are accessories of the vessel, vessels weighing up to 200 kilograms inclusive and with engine power (if installed) up to 8 kilowatts inclusive, as well as sports sailing vessels which length should not exceed 9 meters, which do not have engines and on which there are no rest places are not equipped are not subject to state registration.
Origin and evolution of the Boat SVG
The appearance and evolution of the boat in the primitive peoples was in several ways. The first idea about the boat could have been given by a tree trunk floating along the river. Such trunks are sometimes used by animals to move around on water. A man has adapted the tree for better use, sharpening one or both ends of it and hollowed it out inside, that is, making it a shuttle. Such chisels, “one-house”, boats, souls, bats were in use by many peoples: the remains of them were found in the places of ancient pile buildings in Swiss lakes, in peat bogs, etc. They are still found on some Siberian rivers and lakes, as well as in many places in Asia and Africa. Often small enough to hold one to three people, they can sometimes be large enough to reach huge heights and thicknesses. Similar boats meet in Polynesia and Africa, they were used by the ancient Russ which went in them even the sea on Tsargrad. The technology of barreling out the trunks (half of them) usually involves burning, with the edges of the urine with water, and that the edges did not converge, they are spread with sticks or planks. This type includes most of the so-called canoes of different primitive community tribes.
Improvement of a Boat SVG consisted in packing on its edges on each side on 1-2 boards or strips by means of vegetative fibres or wooden spindles, and cracks were plugged with moss, smeared with pitch and other waterproof materials; the basis of a boat turned to a keel. Such boats are common among Malay peoples (prahau), and in advanced forms are found everywhere. Here can also be attributed boats from the bundles of fascines, papyrus, reeds, used by the ancient Egyptians, “junks” on the Ganges and the like.
A special type of Boat SVG is the bark of wood; the simplest forms are found in indigenous Australians, who cut off a huge piece of bark from the trunk and give it the shape of a shuttle with the help of wood fibers and crossbars. Similar boats are used at pedestrians (on the shores of the Fiery Land), in some places in North America, Nanai lobster and so on.
Leather inflated bags provide a special way to stay on the water; they have been used, for example, by American Indians when crossing rivers. Surfaced seashores, such as Peru, are also used by rafts on leather bags; they were used by ancient Assyrians and Egyptians to float goods down the Tigris and Nile. In places, the bags are based on baskets made of willow branches, which, according to Julius Caesar, were used by ancient Britons. An improved type of movement is the Aleutian kayaks and Eskimo kayaks, which are shaped like boats and consist of a wooden base covered in leather; only a small round hole is left to sit down. Such boats are very light (they can be carried freely by a person) and fast, but unstable.
Special types are complex boats and rafts made up of several connected shafts, for example, New Guinean catamarans, double canoes or boats with a so-called balancer. The latter are common in Polynesia and Melanesia and allow for safer navigation at sea. The principle of the balancer is that parallel to the boat with the help of two crossbeams at a distance of 2 – 4 meters from it the log, which is located on the surface of the water, is strengthened. This log does not allow the boat to tilt or tip over too much. Sometimes balancers are arranged on both sides, sometimes the log is replaced by another Boat SVG (double canoe), sometimes a balancer is made on one side, and on the other side a platform is arranged on a number of crossbeams, allowing more people to fit.
The rudder was already the latest device formed from the oar, and the oar basically comes down to the pole, stick, spear, stick. Many forms of oars used in Polynesia, Melanesia, etc., in their narrow, pointed or short, extended forms are almost indistinguishable from some forms of copies and sticks.
The simplest sail was a piece of fabric or horns, which early began to be given a more correct, three- or quadrangular shape and placed on a stick with a crossbar (the first shape of the mast and snail). In some places, however, for example in America, the sail remained unknown to the primitive population until the arrival of the Europeans.