HITACHI'S ECONOMY BULKER DESIGN

The new 61,000 tonne d.w. design retains the basic dimensions and capacities of the original Panamax bulk carrier but exploits more efficient hull lines, a larger diameter propeller, derated low speed main engine and a slower service speed. The accommodation specification has also been upgraded and separated from the engine casing. A detailed comparision between the new and established designs is given from which one notes, above all, the reduced daily total fuel consumption promised by the former: a saving of about 10 tonnes. The main engine consumption is calculated at 35.6 tonne/day. The revised, slightly lower service speed of 14.5 knots was adopted after consultation with a number of specialist bulk carrier operators on the present and future demands of the market. Potential economies are also offered in manning--26 personnel replace 31--and the trend towards the use of lower quality bunkers has been acknowledged in the provision for 3,500 sec. fuel. Hitachi has retained the B&W seven-cylinder L67GFCA low speed engine for the new design, but in derated mode (12,100 bhp at 105 rev/min m.c.r.). B&W shipyard, which is shortly to deliver the first of a series of its own economy Panamax bulk carriers, specified a derated five-cylinder L80GFCA engine (12,600 bhp at 90 rev/min) for the standard design. Hitachi's propulsion choice is a less expensive solution and achieves better overall economy for the ship design than the larger bore engine; however, a derated 5L80GFCA unit could be accommodated if a customer so required, as could the equivalent Sulzer low speed engine. A turbogenerator package is available as an option.

  • Availability:
  • Corporate Authors:

    IPC Industrial Press Limited

    Quadrant House, The Quadrant
    Sutton, Surrey,   England 
  • Publication Date: 1981-1

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00330322
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM