CONTAINER SHIPS THAT CARRY ALL CARGO ON DECK

A ship designed in accordance with this concept would carry all its cargo on deck and would be the ultimate in "open ship" design. Its features would include: (i) The L/B ratio would be considerably lower than that of a conventional container ship. (ii) The containers would be stacked in conventional guides on a deck (the main deck) just above the waterline; hatches would not be necessary in the "open" upper deck. (iii) The hull could readily be arranged to take the torsional and longitudinal-bending moments. (iv) The underwater hull-form would be designed in accordance with speed and stability requirements, without the need to consider stowage space. (v) Above water, the hull form amidships would be determined by cargo considerations, and forward and aft it would be determined by seaway requirements. The concept, including two 18,230-tonne (displacement) design variants, is discussed in detail under the headings: (1) A Critical Look at the Conventional Container Ship. (2) Water on Deck. (3) Principal Dimensions. (4) Resistance and Propulsion. (5) Freeboard. (6) Steel-Weight and Strength. (7) Stability. (8) Container Stowage and Equipment. (9) Comparison between the Designs and Ships of Conventional Construction. The comparison under (9) is made with a 1969-built first-generation container ship and with a 1980 design for a conventional container ship of L/B = 4.58, and is concerned with building costs and operational economics. Building costs for the unconventional ships designed to the new concept would be lower. However, the 1980 conventional design has the more favourable required freight-rate because of its greater container-capacity, and it is mentioned that, in this intial study, it has not been possible to develop the unconventional concept to a stage where it is more economic than a conventional ship. Order from BSRA as No. 54,483.

• Corporate Authors:

  Schroedter (C) and Company

  Stubbenhuk 10
  Hamburg 11,   Germany 
• Authors:
  • Arp, P
  • Isensee, J
• Publication Date: 1980-9

Language

• German

Media Info

• Features: References;
• Pagination: p. 1283
• Serial:
  • HANSA
  • Volume: 117
  • Issue Number: 18
  • Publisher: Deutsche Bahn AG

Subject/Index Terms

• TRT Terms: Containers; Containerships; Decks (Ships); Design; Economic analysis; Propulsion; Stowage; Structural analysis
• Old TRIS Terms: Container stowage; Containers on deck; Deck stowed containers; Deck wetness; Freeboard
• Subject Areas: Design; Economics; Marine Transportation;

Filing Info

• Accession Number: 00329911
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Mar 12 1981 12:00AM