EUDDEES

467

A small area of a balanced rudder projects tqrward oi the rudder
post and acts as a partial balance by bringing the centre ol pressure
nearer to the axis and relieving the rudder head of considerable torsional
stress when the helm is put over either way and. of course, reducing
also the steering engine power required to do so. Balanced rudders

Fig 62.—An Oertz Streamline Rudder, and Draught Figures.
have greater fore-and-aft length but less height than ordinary, and the
design of the stern post has to be suitable for the type of rudder fitted.
Figures 56 to 61 illustrate various shapes of rudders. In 56, 57 and
68- the pintle shown at the bottom does not support the rudder but
serves only as a steadying piece, the weight being taken inboard on the
stern post. The steering engine in 59 is shown just over the rudder.