338,423. Bauer, G. Jan. 10, 1929, [Convention date]. Motor power plant. -In a marine power plant having two or more propeller shafts in which each shaft is driven, directly or through gearing, by a reciprocating steam engine, the exhaust steam of all the reciprocating engines is used in a single exhaust turbine which transmits its output to one of the propeller shafts only. Fig. 1 shows two compound reciprocating engines 1, 2 driving propeller shafts 10, 11, and exhausting into a single exhaust turbine 3 which is geared to the shaft 10. A fluid coupling 16 may be provided. The plant may be arranged so that the power of the engine 1 together with that of the turbine 3 is equal to the power of the engine 2. When existing plant is modified by the addition of a turbine, the powers may be equalized by boring out one of the cylinders or by inserting liners in others.