USE OF WASHBACK TO ACHIEVE REQUIRED PROPELLER REVOLUTIONS

Because all merchant ships tend to lose about three revolutions per minute after four years of service, steps are being taken to reduce the excess torque. Usually when the screw is not replaced, the ends of the blades are cut off, which reduces speed. Kawasaki Heavy Industries, Ltd. has devised a method of shaving off the after ends of the blades. This reduces the effects of washback and does not greatly reduce speed. Kawasaki has tested many ships, using computerized information, and has proven that the concept works and, in addition, has been able to make many suggestions to builders and owners to reduce loss of revolutions before the ship enters service.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/7260964
• Corporate Authors:

  Engineering, Chemical and Marine Press, Limited

  33-39 Bowling Green Lane
  London EC1P 1AH,   England 

  Engineering, Chemical and Marine Press, Limited

  33-39 Bowling Green Lane
  London EC1P 1AH,   England 
• Publication Date: 1972-5

Media Info

• Pagination: p. 87-88
• Serial:
  • Motor Ship
  • Volume: 53N6
  • Issue Number: 22
  • Publisher: Blohm + Goss GMBH
  • Serial URL: http://www.hhc.co/uk/motorship

Subject/Index Terms

• TRT Terms: Force; Propeller blades; Propellers
• Old TRIS Terms: Propeller efficiency; Propeller forces; Propeller speed
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00035213
• Record Type: Publication
• Source Agency: United States Merchant Marine Academy
• Files: TRIS
• Created Date: Oct 27 1973 12:00AM