centuries boats used by human to wading River or Ocean initiated by the discovery of the boat. usually man on the past using a canoe, raft or boat, the greater the need for holding capacity then made boat or raft larger called the ship. materials used for the manufacture of ships on the past using Wood, bamboo or rods papyrus as used the ancient Egypt then used material metal materials such as iron / steel for human needs will ship strong.
for driving human initially to use a paddle then wind with the help of the screen, steam engine after appearing industrial revolution and diesel engine as well as the nuclear. some research raise boats engine running of floating on the water as hovercraft and eakroplane. and boats used at the base of the Ocean ie submarines.
radar harp this is a radar modern can detect directly the distance between the ship with the ship, ship with the mainland vessel with the region dangerous, speed boat, wind speed, and have the power accuracy clear images
thank....!
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