CONVERSION OF A VLCC FROM STEAM TO DIESEL PROPULSION

The full details on the technical implications and performance results of the "Mobil Hawk" is a 285,440 tonne d.w. tanker built by Sasebo Heavy Industries in 1976, originally powered by a General Electric (U.S.A.) steam turbine developing 36,515 ship m.c.r. and driving a propeller at 90 rev/min. The main targets of the reengining project, which was preceded by a full investigation by technical staff of the owner and the yard, were to achieve: the best possible thermal efficiency for the replacement diesel engine plant, minimal maintenance cost and minimal noise and vibration; minimal cost and working period for the conversion; high manoeuvrability of the main engine operating system; a clutch of adequate capacity. The main turbine and its associated reduction gear were removed and replaced by two new 12-cylinder IHI-SEMT Pielstick PC4V medium speed engines with a combined m.c.r. of 36,000 bhp at 400 rev/min, driving the propeller at 86 rev/min via new clutches and reduction gearing. The existing fixed pitch propeller, propeller shaft, intermediate shaft and bearings, and thrust bearings were all retained.

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  • Corporate Authors:

    IPC Industrial Press Limited

    Dorset House, Stamford Street
    London SE1 9LU,   England 
  • Publication Date: 1979-10

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Filing Info

  • Accession Number: 00307531
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 11 1980 12:00AM