PROBLEMS IN THE DESIGN OF SHIPYARD TRANSFER INSTALLATIONS FOR THE DRY MOVEMENT OF LARGE SHIPS

The Authors first review the problems and alternative solutions in choosing the layout of a "horizontal" shipyard in which ships are repaired or built on dry berths level with the rest of the yard. Drawings are given of preliminary designs for the layout of:--(a) A yard for repairing 90,000-dwt ships (six berths) and for building 120,000-dwt ships (one berth), and including a 35,000-tonne mechanical ship-lift, and carriages and a transfer system for moving the ships in the yard. (b) A six-berth yard similar to (a) but for repairs only, with a 22,000-tonne ship-lift. (c) A repair yard of similar capacity to (b) but with access through a shallow water-channel. (d) A two-berth yard for building 120,000-dwt ships, with launching by means of a transfer system and a 22,000-tonne floating dock. The many considerations applying to the choice facilities and layout, including civil engineering requirements, are discussed in detail. Procedures in which rail-borne carriages or trolleys are used for the movement of ships within the yard are then described, with particular reference to the method of transfer between longitudinal and lateral movement of the ship; the respective merits and drawbacks of hydraulic and non-hydraulic transfer systems are discussed in general terms. Brief information is included on systems used in some Spanish and other shipyards. Tractors and other devices, including self-propulsion, for hauling the carriages are also described and discussed. In a brief consideration of some associated matters, it is mentioned that the area near a ship-lift in a repair yard can be advantageously used for hull cleaning.

• Supplemental Notes:
  • This paper was presented at a meeting held in Santander in May 1979.
• Corporate Authors:

  Asociacion de Ingenieros Navales

  Apdo Correos 457
  Madrid,   Spain 
• Authors:
  • Morales, R R
  • Garcia, JEP
• Publication Date: 1979-10

Language

• Spanish

Media Info

• Pagination: p. 359
• Serial:
  • INGENIERIA NAVAL
  • Volume: 47

Subject/Index Terms

• TRT Terms: Cargo handling equipment; Drydocks; Floating docks; Launching; Lifting equipment; Materials management; Repairing; Ships; Shipyards; Structural design
• Uncontrolled Terms: Ship repair
• Old TRIS Terms: Drydock facilities; Ship lifts; Shipyard design
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00310901
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: May 7 1980 12:00AM