The Authors, of Esso International Services Inc., describe the methods adopted to save fuel on the company fleet of 25 VLCCs and ULCCs, powered in the range 22 800-33 100 KW and built in Europe and Japan. The necessity arises from the conditions of slow operation enforced by the oil crisis. An extension of this programme may include Diesel-driven ships. The wider objective is to maximise overall ship performance. Parallel investigations for optimisation of hull performance, propeller efficiency, and navigational aids are in progress. The fuel losses associated with hull performance are frequently many times larger than the engine losses and should not be ignored. To study the effects of slow steaming on performance, a five-year old vessel was selected for a series of tests run with the plant operating at design heat balance. The results showed that fuel consumption was 8% higher than it had been during sea trials at full power and revealed a general decline in operating and maintenance techniques. A wider programme of fleet investigations with the object of saving fuel has therefore been established. Some details of this programme are given.

  • Availability:
  • Corporate Authors:

    Institute of Marine Engineers

    Memorial Building, 76 Mark Lane
    London EC3R 7JN,   England 
  • Authors:
    • Attwood, J H
    • Hinks, H C
    • SMITH, K A
  • Publication Date: 1980-2

Media Info

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Filing Info

  • Accession Number: 00317468
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Oct 8 1980 12:00AM