Many roll-on/roll-off ships have insufficient headroom for handling containers stacked two-high on trailers, but have weather-deck areas suitable for multi-tier stowage. A low-cost method, the "MacBoye" system, for stacking containers two-high (on trailers) on the weather deck of such ships has been devised by MacGregor, in association with Captain Johannes Boye, and can be fitted to any vehicle-deck ship with elevator access to the weather deck. There are two versions. One has purpose-made units mounted on the weather deck adjacent to the elevator opening; the other utilises a conventional fork-lift truck mast with a spreader. The article describes, with explanatory diagrams, the operation of the first version. The first container is held, by the MacBoye units, above the elevator opening in the weather deck while its trailer is lowered on the elevator and taken away. The second container (on its trailer) is lifted up to the first and locked to it. The containers are released from the MacBoye units and the trailer, loaded with both containers, is then further lifted to weather-deck level and towed to its stowage. The containers may be 20-ft or 40-ft units. Where the elevator cannot take two fully-loaded containers, it may be practicable to leave the top one empty or lightly loaded. Where there is little container traffic in one direction, the system could be used to stow empty containers two or three high on the weather deck, leaving the vehicle deck free for other cargoes. Order from BSRA as No. 49,697.

  • Corporate Authors:

    Whitehall Technical Press Limited

    29 Palace Street, Westminster
    London SW1,   England 
  • Publication Date: 1978-7

Media Info

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Filing Info

  • Accession Number: 00195391
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Jul 31 1979 12:00AM