The Integrated Marine Propulsion System (IMPS) developed by I.H.I. is a special propulsion unit comprising a non-reversing medium-speed diesel engine combined with a single reduction gearbox incorporating the lubricating oil and cooling water pumps and the drives required for the main electric generator and a controllable pitch propeller. The advantage of this arrangement is that the CPP can be controlled directly from the bridge throughout the entire range of seagoing or manoeuvring conditions without overloading the engine or causing vibrations and overheating. The first IMPS units were developed to provide the I.H.I. Friendship and Freedom Mk II ship series with an economic propulsion system compatible with other features of these ships. This paper presents the design criteria of the system and describes the propeller requirements which have had to be taken into account in the development of the system. The results of tests and trials of the installation on board the first ship of the Friendship series are presented and discussed. Principal particulars of Friendship and Freedom Mk II ships are given in an Appendix to the paper.

  • Availability:
  • Corporate Authors:

    International Periodical Press

    193 Heemraadssingel
    Rotterdam,   Netherlands 
  • Authors:
    • Ono, R
    • Yoshida, O
  • Publication Date: 1980

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Filing Info

  • Accession Number: 00329997
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM