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SEA TRANSPORTATION SYSTEMS


SEA TRANSPORTATION SYSTEMS
SEA TRANSPORTATION SYSTEMS

Story of ships through time. Triangular sails. How ships function. The Principle of Archimedes. First propellers. Different types of vessels: fishing-boats, those used for military purposes, transport, petrol-tankers, towboats and tugs. Recent marine inventions such as hydrofoils and hovercraft. Summary.


INTRODUCTION
- Water is considered to be the first natural element that mankind ever used for transportation purposes.
- About 20,000 years ago, man was already using tree-trunks and canoes
- The first ships
- Square sails. Triangular sails
- The steam

HOW BOATS WORK
- The Principle of Arquimedes
- Human energy through rowers
- The force of the wind was used by the sails.
- Advantages of triangular sails compared to square sails
- The masts
- Watt and the steam engine. The use of paddles or propellers to move the ships through the water.
- Diesel engines. Ships powered by electrical and even nuclear energy.

DIFFERENT KINDS OF SHIPS
- Different uses of boats: fishing-boats, warships, transport and cargo-boats
- Transatlantic liners. Petrol-tankers.Container ships.
- Auxiliary vessels: tugs, dredges

MARINE INNOVATIONS
- Hydroplanes
- Hydrofoils
- Hovercrafts

SUMMARY

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