A CONSTANT-TENSION WINCH SYSTEM FOR HANDLING RESCUE BOATS

This paper describes a constant-tension davit winch and control system that has been developed to reduce the risks involved when launching and recovering small boats over the side of a ship. During a launching operation, slack cable is available automatically as soon as the boat rests on the water, allowing the cable to be pulled from the winch by hand. During a recovery operation, as the boat rises and falls on the waves, the davit-winch drum will yo-yo backwards and forwards, maintaining tension on the cable until the operator is ready to hoist the boat from the crest of a wave. This prevents the boat from being buffeted by the waves and avoids most of the shock loads that occur when a conventional davit winch is used.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00253316
• Supplemental Notes:
  • Journal article
• Authors:
  • Christison, S G
• Publication Date: 1988-7

Media Info

• Pagination: 9 p.
• Serial:
  • Marine Technology and SNAME News
  • Volume: 25
  • Issue Number: No.3
  • Publisher: Society of Naval Architects and Marine Engineers
  • ISSN: 0025-3316

Subject/Index Terms

• TRT Terms: Launching; Search and rescue operations; Winches
• Uncontrolled Terms: Recovery; Rescue vessels
• Old TRIS Terms: Davits; Tension control
• Subject Areas: Construction; Marine Transportation;

Filing Info

• Accession Number: 00655670
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM