PLANNING OF A MULTI-PRODUCT OFFSHORE TERMINAL

The planning of an offshore terminal at Ponta Dobela near Lourenco Marques, Mozambique is described. This terminal will handle at a single berth a veriety of liquid and dry bulk cargoes: crude oil, petroleum products, iron ore, coal, phosphate, and other raw materials. Ships of 25,000 DWT to 300,000 DWT will be loaded and unloaded at an open-sea pier located 6,000 feet (1,800 meters) from the shore. The water depth at the sea-berth is 15 fathoms (27 meters) at low tide. The pier and the storage facilities on shore will be linked by a trestle structure carrying the oil and ballast pipelines, a belt conveyor and a roadway. An extensive computer analysis using the SEA-BERTH program developed by Soros Associates was carried out to determine the oscillations of ships moored at the offshore berth and the tensions in the mooring lines. The results of the computer analysis were confirmed by hydraulic laboratory tests. The pier was designed to accommodate four hydraulically operated flexible marine arms for the handling of liquid cargoes and two telescopic shiploaders of the linear slewing type, developed by Soros Associates, for the loading of dry bulk materials. This equipment has sufficient reach to operate even when there is a gap of 30 feet (9 meters) between the dockface and the ship. The analysis of force, direction and statistical distribution of winds, currents and waves indicated that during an average year docking and undocking maneuvers can be carried out at least 85% of the time and loading and unloading can take place at least 95% of the time. With the help of the PORT-LOG computer program of Soros Associates, it was determined that this single berth terminal will be suitable for the efficient handling of at least 15 million tons of bulk cargo per year.

  • Supplemental Notes:
    • Cost of entire Proceedings is $25.00.
  • Corporate Authors:

    Marine Technology Society

    5565 Sterrett Place, Suite 108
    Columbia, MD  United States  21044
  • Authors:
    • Koman, B
  • Publication Date: 1974-9

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Filing Info

  • Accession Number: 00071898
  • Record Type: Publication
  • Source Agency: Marine Technology Society
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM