Page:The steam turbine, the Rede lecture 1911 (IA steamturbinerede00parsrich).pdf/49

ECONOMY OF MARINE TURBINES 37 The improvement in efficiency resulting from the successive modifications and im- provements in the proportions of turbines, and also arising from the increase in the size is shown by the particulars given in the Table opposite. Table II on this page gives corresponding data in regard to marine turbines.

TABLE II.Performance of Notable Ships of Different Epochs with Parsons' Turbines.

Many warships are now being fitted with installations with double and treble turbines in series on the steam and exceeding the