Page 24: of Maritime Reporter Magazine (October 2015)

Marine Design Annual

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Innovative LNG Containment Tank

Tank design reduces cost of LNG carrier 5 to 10%

The Cubic Donut Tank System (CDTS) was originally developed in 1973 and a patent was awarded in 1976. The main design principle behind the initial design concept was the con- struction of a near prismatic shape using 12 substantially identical cylinders that were inter- connected to each other so that it would have the structural ef? ciency of a spherical tank and the volumetric ef? ciency of a membrane tank. Unfortunately, this was the time when the U.S. broke off diplomatic relations with Algeria cancelling all contracts to import LNG. Six new

LNG Carriers were immediately laid up and interest in LNG containment technology in the

U.S. waned ... until recently.

By Thomas Lamb and Regu Ramoo

Main Photo: Altair LNG Carrier Concept (inset) Figure 1: Development of CDTS 24 Maritime Reporter & Engineering News • OCTOBER 2015

MR #10 (18-25).indd 24 10/2/2015 2:58:55 PM

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First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.