Friday, September 24, 2010

Sailing Boat


          

As man started to overcame the boundaries of land travel, his curiosity about the world around him increased. To his aid, man had developed a means of travelling on water even before he had domesticated the horse. The origin of the dugout boat is one of history’s great mysteries. Historians are unable to pinpoint when or where the very first water vessel was set afloat. But, however it happened, the addition of the boat allowed man to, for the first time ever, cross bodies of water without getting wet.

The earliest knowledge of ships with sails appears in Egyptian rock drawings dating from 6000 BC. Wood was the most popular material for shipbuilding. The sails used the power of wind to drive the boat along. A remarkable example of their shipbuilding skills was the Khufu ship, a vessel 143 feet (44 m) in length entombed at the foot of the Great Pyramid of Giza around 2,500 BC and found intact in 1954.



However, some early civilizations had no quantities of wood. In Mesopotamia, the first boats were built out of inflated and stretched animal skins and clay pots. The Egyptians used reeds. Early wood boats included: rafts, canoes, and dugouts. The oldest dugout canoes found by archaeologists were often cut from coniferous tree logs, using simple stone tools.


In East Asia, by the time of Zhou Dynasty (1045-256 BC) ship technologies such as stern mounted rudders were developed, and by the Han Dynasty, a well kept naval fleet was an integral part of the military. Elsewhere in Korea in the 15th century, one of the world's first iron-clads, the turtle ship (one kind of warship), was also developed.


In the Mediterranean, galleys were developed about 3,000 BC. Galleys were eventually rendered outdated by ocean-going sailing ships, such as the Arabic caravel in the 13th century, the Chinese treasure ship in the early 15th century, and the Mediterranean man-of-war in the late 15th century.


During the first half of the 18th century, the French Navy began to develop a new type of vessel known as a ship of the line, featuring seventy-four guns. This type of ship became the backbone of all European fighting fleets. These ships were 56 metres (184 ft) long and they carried a crew of about 800 sailors and soldiers.


After 1800s, the first steam ships were developed. Then, in 1912, the first diesel-powered ship, the Danish Selandia, was launched. Ship designs stayed fairly unchanged until the late 19th century.


Before the introduction of the compass, celestial navigation was the main method for navigation at sea. In China, early versions of the magnetic compass were being developed and used in navigation between 1040 and 1117. The true mariner's compass, using a pivoting needle in a dry box, was invented in Europe no later than 1300.


Eventually submarines were developed mainly for military purposes. In 1660 Cornelis Drebbel invented the first submarine - an human oared submersible. Designs for underwater boats or submarines date back to the 1500s and ideas for underwater travel date back even further. However it was not until the 19th century that the first useful submarines began to appear. During the Civil War, the Confederates built the H.L. Hunley,the submarine that sank a Union ship. The U.S.S. Housatonic was built in 1864. But it wasn't until after World War I began that the first truly practical and modern submarines were invented.


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1 comment:

  1. Hi, looks like alot of work,the idea is there but i would not sail with him without a crash helmet....
    boat hull psychosnail

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