Transcription of SOME IMPORTANT NAVAL ARCHITECTURAL TERMS
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SOME IMPORTANT NAVAL ARCHITECTURAL TERMS
Page 1(6) 2009 Foreship IMPORTANT NAVAL ARCHITECTURAL TERMSF ebruary 2009 ITEMEXPLANATIONA-, B- and C-class divisionsSOLAS has tables for structural fire protection requirement ofbulkheads and decks. The requirements depend on the spaces inquestion, and are different for passenger ships and cargo , A-15, A-30, A-60:Shall be constructed of steel or equivalent material, shall beconstructed to prevent passage of smoke and flame for 1 h inStandard Fire Test, shall be insulated so that the average temperatureof the unexposed side does not rise more than 140 C (any point nomore than 180 C) above the original temperature within 0, 15, 30 or60 , B-15:Shall be constructed to prevent passage of flame for h in StandardFire Test, shall be insulated so that the average temperature of theunexposed side does not rise more than 140 C (any point no morethan 225 C) above the original temperature within 0 or 15 be constructed of approved non-combustible materials(However, combustible veneer may be used).
x Earlier 1 GRT was 100 ft3, or 2.83 m3; thus figures for e.g. “Titanic” cannot be directly compared with GT figures of today’s vessels. x For example, if vessel’s enclosed volume is 294 000 m3, the GT is ca. 91,000. x GT is often the base for different port and other fees. x As GT is logarithmic, it cannot be used for accurate
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