Monday, July 28, 2014

BV Class WW

“”Bureau Veritas (BV) is to launch Lashing WW, a voluntary notation that opens up more flexible stowage on containerships through revised calculations from the international class society's research into ships in service. Lashing WW can be used on ships fitted with an approved lashing computer that can calculate container stack weights and required lashing using acceleration levels corresponding to the ship's loading condition and geographical area of operation. BV claims research and data from real ships in service shows that accelerations in the midships section of container vessels are always closely correlated with the natural roll period of the ship and could often be much less than those set down in the present rules for lashing calculations. BV's calculations show that stack weights midships for ultra-large container vessels using BV lashing software can be increased safely .””


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