The ratio of the underwater volume of a ship to the volume of a rectangular block with the same effective lengths, draft and beam |
The ratio of the underwater volume of a ship to the volume of a rectangular block with the same effective lengths, draft and beam |
Related Terms |
MOLDED_DEPTHThe vertical distance from the molded baseline to the top of the freeboard deck beam at side, measured at midlength of the ship |
CBBlock coefficient - a measure of the fullness of the form of the ship and is the ratio of the volume of displacement to a given water-line, and the volume of the circumscribing solid of constant rectangular cross-section having the same length, breadth and draught as the ship. CB= (L x B x T) The LPP is normally used in calculating the value of CB which varies with the type of ship. Fast ships Ordinary ships Slow ships 0.50-0.65 (fine form) 0.65-0.75 (moderate form) 0.75-0.85 (full form) |
SEAWAYMAX VESSELThe largest vessel that can transit the locks of the St. Lawrence Seaway. Length is 226 meters (740 feet); Beam is 24 meters (78 feet); Draft is 7.92 meters (26 feet). |
LENGTH BPPThe length of a vessel along the waterline from the forward surface of the stem, or main bow perpendicular member, to the after surface of the sternpost, or main stern perpendicular member. Believed to give a reasonable idea of the vessel's carrying capacity, as it excludes the small, often unusable volume contained in her overhanging ends. |
DEADWEIGHTThe total weight in tons (2240 lb.) that a ship carries on a specified draft including fuel, water in tanks, cargo, stores, passengers, baggage, crew and their effects, but excluding the water in the boilers. It is the difference in weight between a vessel when it is fully loaded and when it is empty measured by the water it displaces. |
LPPThe length of a vessel along the waterline from the forward surface of the stem, or main bow perpendicular member, to the after surface of the sternpost, or main stern perpendicular member. Believed to give a reasonable idea of the vessel's carrying capacity, as it excludes the small, often unusable volume contained in her overhanging ends. |
FLOODABLE LENGTHThe length of ship which may be flooded without sinking below her safety or margin line. The floodable length of a vessel varies from point to point throughout her length and is usually greatest amidships |
LOADED DISPLACEMENTThe displacement of a ship when floating at her greatest allowable draft |
BALLASTAny liquid or solid weight placed in a ship to change the trim, increase the draft, or to regulate the stability |
DRAFTThe depth of the ship below the waterline measured vertically to the lowest part of the hull |
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