Plimsoll Mark 6 : A mark, welded on both sides of the vessel, which gives the limit to which a vessel may be loaded, depending on the specific gravity of the water in which the vessel is situated
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Sabelatrans Shipping Global SSG(Specialized in Shipping/Transportation of Heavy Lift, RoRo & Project forwarding by Sea , Air & Land), Shipping Terms, Ajman, UAE 2013. http://www.sabelatrans.com/shipping_terms.htm, (Log - Brit) {1030}