SOME METHODS OF MOVING MEDIUM-WEIGHT SHIPS FROM AND INTO THE WATER

Dealing first with methods of bringing ships ashore for repair, and of returning them to the water, the Authors (of B.J. Consultant) show that there is scope for the ship-lift for handling vessels in the docking-weight range between 2,000 and 10,000 tonnes. Ship-lifts have been developed for weights of up to 5,000 t, but there is theoretically no weight limit. Advantages of the lift, as compared with slipways, dry docks, and floating docks, are briefly discussed. The different types of winch-operated and jack-operated lifts, and the methods and equipment, including hydraulic bogies and water-cushion devices, for the much more difficult problem of transferring the vessel between a lift (or slipway) and the sheds or other work-place are reviewed; some civil engineering problems are mentioned. A caisson system for replacing the lift at yards where there is practically no tide (as in the Mediterranean) is described. Conventional launching of new ships down inclined ways, and floating them out from a building dock, are briefly discussed. The methods described for handling ships under repair can also be used for moving new ships. Some devices, such as water-cushions and hydraulic bogies, can be used in conjunction with conventional launching-ways; the procedure used with water-cushions, in which the ship is "placed in the water" rather than launched, is described. The use of hydraulic pusher-jacks in tandem ship-construction on an inclined berth, and for other purposes, is also described. The makers of the equipment under discussion, and the shipyards using the equipment, are in many cases named in the article.

• Corporate Authors:

  Journal de la Marine Marchande

  190 Boulevard Haussmann
  75008 Paris,   France 

  Journal de la Marine Marchande

  190 Boulevard Haussmann
  75008 Paris,   France 
• Authors:
  • Beghin, M C
  • Jacquinet, R H
• Publication Date: 1976

Language

• French

Media Info

• Pagination: 12 p.
• Serial:
  • Nouveautes Techniques Maritimes 1976
  • Publisher: Journal de la Marine Marchande

Subject/Index Terms

• TRT Terms: Cargo handling equipment; Docking; Hydraulic equipment; Lifting equipment; Materials management; Ships; Shipyards
• Uncontrolled Terms: Hydraulic machinery
• Old TRIS Terms: Drydocking; Lifting platforms; Ship lifts
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00158010
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Aug 31 1977 12:00AM