Construction of Boats
Go to: Previous Article Next Article
Boats are watercrafts used to cross bodies of water. Their size ranges from a small canoe to a ship used to transport either people or large containers.
These watercrafts have been a part of history. Historical watercrafts are said to have been longboats which dated from 7,000-10,000 years ago. The oldest watercraft that was discovered by archeologists was a canoe in Pesse which was made from a hollowed trunk of a tree in the period of 8200 and 7600 B.C. The canoe is now exhibited in the Museum in Netherlands. This craft has played an important part in the trade between civilizations before.
There are many types of boats and it can be categorized as manpowered which includes canoes, kayaks and gondolas, sailboats which are powered by its sails, or those motor powered ones that uses engines to function.
Parts of a Boat
The hull is the main and very important part of the watercraft which provides buoyancy. The deck is the chambered part that spans the hulls. The cabin is an enclosed space of the watercraft. The keel also known as the backbone is a structure where the frames are fixed. The bow is the front or the forward end. Historical watercrafts have figures protruding the bows. The stern is the rear end.
Materials for Making Watercrafts
Historical watercrafts have been made from several materials which include animal skin, log and wood. The rapid evolution of technology has lead to the development o ships. Many ships have been made from steel in the mid 19th century. Fericement was created in 1855 and it was made from ferro-cement. It was heavy yet strong and it doesn't leak nor corrode that fast and it can be repaired easily. The idea of modern ships was from Fericement. In 1930 ships made from steel were made to avoid deforestation. In 20th century, aluminum has been used to make ships. This material doesn't corrode in salt and water and are lighter compared to steel. Ships made from fiber glass were made in 1960's. It is strong and it doesn't rust but extreme heat from the sun can easily destroy it.
Terminologies
Propulsion is the force to power such watercrafts. Ancient times use manpower to operate the watercrafts. Sailboats use the wind to power its sail and a person to maneuver the sail to get to the right direction. Motor powered ships have an engine that needs a certain substance to power it up. It can be in the form of a gasoline, coal or fuel and sometimes nuclear for submarines and for naval ships. Other ships also use electricity to power it up. Others paddlewheel are also used to move a watercraft. Hover boats use air fans.
Buoyancy is the displacement of weight in the water. The hulls should b made from a material that is more dens than water. The more weight the watercraft has, the volume below the waterline increase to keep the balance maintained, so the watercraft will sink a little to balance this.
Article Source: Articlelogy.com
Insurance Comparison Quotes - Selected Insurance Carriers eager to quote you a price, fast!-
Word Count: 517
Reduce Your Debts Without Bankruptcy. See How Much You Can Save. Free Debt Analysis
