The first part of this article is based on a paper presented by C. Verolme, of the Naval Project Development Co., Rotterdam, at the 5th International Conference on LNG (LNG 5), held in Dusseldorf in September 1977. As Iran is showing interest in LNG carriers with 300,000-400,000 cubic meters capacity and a draught of not more than about 40 ft, for exporting natural gas via the Cape, this Rotterdam Company has developed a design for a 330,000-cubic meters ship with a draught of 41 ft. The design, general-arrangement drawings of which are included in the article, could be adapted to three other principal capacities: 420,000, 220,000, and 125,000 cubic meters. The 330,000-cubic meters design has container-ship hull modified for the needs of a cryogenic container system. The cargo would be carried in 90 vertical cylinders of about 11.8 m diameter and 33.5 m high, made of aluminum (AL 5083-0); these containers, each of which has its own submerged pump, are fitted in five insulated holds and interconnected within each hold, to form containment blocks resting on the double bottom, which is designed to be very rigid. Loading and discharge rate is 10,000 cubic meters/hr. Propulsion is by a steam turbine of about 50,000 shp driving a single screw, giving a trials speed of 18.75 knots. A crew of 35 is envisaged. The article gives further information on this design; among its advantages are reduced sloshing forces at part loads. The second and smaller part of the article is based on a paper, also presented at "LNG 5", by A. Tonnessen, of Moss Rosenberg. Brief information is given on this company's preliminary design for a 350,000-cubic meters LNG carrier (a size technically feasible but not necessarily acceptable) with five spherical, aluminium tanks. An account, with particular reference to boil-off and associated matters, is given of service experience with the 29,000-cubic meters gas-turbine-powered Lucian which was designed and built by the company. The article also includes a table (presented at the same conference) summarising the operation of the Methane Pioneer during the period 1965-1976.

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    Engineering, Chemical and Marine Press, Limited

    33-39 Bowling Green Lane
    London EC1P 1AH,   England 
  • Publication Date: 1977-10

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  • Accession Number: 00173726
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Apr 26 1978 12:00AM