A stepped speed drive for hydraulically powered marine winches has been developed that provides up to seven different speeds in varying increments. This system is said to cost less than a comparable horsepower system based on a variable speed delivery pump. The system operates on the concept of flow division, and it utilizes a flow divider, which, with a number of different gear sections, each with a specific gear width and therefore a specific flow rate, can offer a number of different flow rates by simply altering the gear widths in each section. Advantages of this system include ease of both operation and maintenance as well as a low initial cost, as compared with a variable speed pump based system.

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  • Corporate Authors:

    National Institute of Shipbuilding & Shipping

    10 Burgemeester and Jacobplein
    Rotterdam,   Netherlands 
  • Publication Date: 1973-11

Media Info

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Filing Info

  • Accession Number: 00052064
  • Record Type: Publication
  • Source Agency: National Maritime Research Center, Kings Point
  • Files: TRIS
  • Created Date: Apr 26 1974 12:00AM