To meet the needs of current and projected shipbuilding activity, General Electric launched a new design program, designated as MST-21, which incorporates in the low power steam propulsion machinery (9,000 to 19,000 shaft horsepower) advances made in the higher-powered units in recent years -- higher steam conditions, more efficient nozzle and bucket construction and improved throttle controls to interface with the unmanned engine room. Reheat as well as non-reheat turbine designs are part of the MST-21 program. New reheat turbine frames are being made available suited to lower-powered applications. Also, included in the MST-21 line of turbines and gears are a number of design options which can, in various applications and for certain ship operating profiles, provide important economic gains. These options include attached auxiliaries, thermal-coupled units for twin screw drive (with either "fixed pitch" or "controllable and reversible pitch" propellers) and improved part load performance. Condition monitoring has come to the fore as a way of insuring that mechanical reliability and thermal efficiency will be maintained over the life of the equipment. Provisions are made in the design of the propulsion machinery to facilitate both continuous and periodic observations and an owner service can be provided to evaluate the machinery condition based on these observations. In response to a strong interest in the marketplace in very high thermal efficiency, there has been a general upgrading of the entire non-reheat and reheat families of turbine frames coincident with the MST-21 program. Noteworthy, in this effort is the new reheat turbine design developed under contract to the U.S. Maritime Administration which operates at steam conditions of 165 bars and 566 degrees C and makes possible an all-purpose fuel rate of 165.5 grams per metric shaft horsepower-hour.

  • Availability:
  • Supplemental Notes:
    • From "Steam Propulsion for Ships in the Changing Economic Environment," a two day conference.
  • Corporate Authors:

    Institute of Marine Engineers

    Memorial Building, 76 Mark Lane
    London EC3R 7JN,   England 
  • Authors:
    • Prohl, M A
    • Siegel, B
    • Smith, N A
  • Publication Date: 1978

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00310885
  • Record Type: Publication
  • Report/Paper Numbers: Series C, Paper SP13Conf Paper
  • Files: TRIS
  • Created Date: May 7 1980 12:00AM