What is a hydrofoil?

my daughter has to draw a picutre of a hydrofoil for her homework

Answers:
HYDROFOIL

1. A ship or boat design that lifts the hull above the water as speed increases, thereby lessening friction and increasing speed.

2. Any ship or boat so designed.

A boat which makes use of a hydrofoil looks like a boat with 'feet'. As the boat gains speed it rises out of the water and moves along on the feet, thus less contact area on the water (reducing drag) and greater speeds can be achieved, using less energy.
a boat which has small 'wings' underwater, which lift the boat up as it goes along. this reduces drag on the hull and allows the boat to go faster

see here: http://www.aufluschi.de/allerlei/schuco_.
Photo's on site below .. its a boat on ski's

http://images.google.co.uk/images?svnum=.
I would say a hovercraft travels across the sea on a cushion of air thank you
A hydrofoil is a boat ususally a powered one with either two or three hulls with `feet` similar to large surfboards attached to the hulls. As the boat gains speed it rises out of the water and speeds along on the boards. With less contact area on the water greater speeds can be achieved using less energy
a hydrofoil is a v-shaped foil that is on the underside of a boat used to help lift it out of water in order to increase its maximum velocity
A vessel with a structure designed to generate (lift) force when moving through liquid,esp under vessels hull to lift it out of water at speed. Good Luck to your daughter. Jim
this is a boat whose hull rises out of the water when it travels at speed. the boat gets it lift from a set of hydrofoils,i.e. underwater wings that develop lift in the water in much the same way as an aeroplane wings develops lift in the air.
A HYDRFOIL is a device that makes the boat airborn

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