Reversing the engine

In a direct acting engine the shaft is directly coupled to

With a reversing gear the direction in which the ship is

A C.P.P. is fitted with adjustable blades.

SOUND

SOUND

By changing the
position of the blades
the propeller-pitch
can be controlled.

adjustable

By pitch is understood
the distance travelled
after one revolution
of the screw.

pitch

So:
A Controllable Pitch Propeller is fitted with adjustable blades that can