Abstract

The merits of U.S. Flag motorships in conjunction with a new American design, high-powered diesel engine suitable for use on ocean-going merchant vessels is investigated. A 20,000-shp advanced-design motorship propulsion system as applied to a dry cargo ship design is developed. Particular attention is directed to the essential characteristics so necessary in the economical and reliable performance of the system. Optional equipment and machinery arrangements have been analyzed carefully for their compatibility to assure efficient operation and maximum convenience to crew members, both at sea and in port. The economics of the motorship are thoroughly investigated and reported in sufficient detail for critical comparison with the economics of other propulsion systems. It is demonstrated that the diesel engine of today is not merely another source of adequate power. The new medium-speed engine provides a residual-fuel diesel propulsion plant that shows distinct advantages in initial investment and operating costs. In addition to its overall economy, the diesel plant provides a propulsion system with a high degree of reliability and safety.

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