DK - WOW! The Visual Encyclopedia of Everything

BY RAIL ▼

Trains carry large

cargoes of people or

goods and, as a

result, are much

more fuel-efficient and

produce less pollution than cars and lorries.

The fastest trains, such as France’s TGV, have electric

motors, but most trains are powered by diesel engines. Trains

can be pulled by one locomotive (powered vehicle) at the

front, but can have two or even more.

BY SEA

▶

As a boat’s weight pushes down on the water, the water

pushes back with an upwards force, called buoyancy,

which supports the boat’s weight, allowing it to float.

A submarine submerges by filling tanks with seawater

to increase its weight. To surface, it uses air to push

water out of the tanks.

Tail rotor stops

the body of the

helicopter from

spinning round

Tail plane keeps

the helicopter

stable as it flies

Jet engines push out a stream of

fast moving air behind them to

thrust the plane forward

Fuselage has

capacity for

365 passengers

Wings with a span

of 65 m (214 ft) are

needed to lift this

large plane

Driver’s cab is equipped

with computerized controls A streamlined shape

reduces air resistance –

the TGV can reach

speeds of more than

500 km/h (300 mph)

Propeller drives

the submarine

through the water Inner hull protects

the crew from

water pressure

Conning-tower – also called

the sail – houses observation

and communications

equipment

Stern planes, together with

the sail planes, control up

and down movement

Tanks between the

hulls fill and empty

of water to sink and

raise the submarine Cylinder-shaped

outer hull for

swift movement

underwater

Sails catch the wind

and use its power to

drive the boat

Rudder is used

to steer the boat

Propeller, driven by

an engine, can be

used on windless days

J-Boats 160

USS SSBN-598

George Washington

Fin-shaped keel helps

to stabilize the yacht

in the water

123

Sail plane

Periscope

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