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Load line mark and additional load lines on the hull of a ship. Load lines are indicated by special markings on the hull. The marking for the main load line, the summer load line, is called load line mark or Plimsoll mark (positioned amidships), the marks for other conditions are named after the condition suffixed with "load line" (e.g. winter ...
The assignment of freeboard (and therefore applicable load line) is dependent on the: type of ship [1] structure of the ship [1] areas and seasons the ship trades in, eg winter North Atlantic [1] other safety measures for special conditions, including certain cargoes. [1] Ships are also categorised as either a type A ship or a type B ship.
Hence, waterlines are a class of "ships lines" used to denote the shape of a hull in naval architecture lines plans. [1] The load line (also known as Plimsoll line) is the waterline which indicates the legal limit to which a ship may be loaded for specific water types and temperatures in order to safely maintain buoyancy. [2]
Load line may refer to: Load line (watercraft), related to ship construction; Load line (electronics), a method of determining operating points in circuits with non ...
load line mark (left) and load lines (right) In Britain until Samuel Plimsoll's Merchant Shipping Act of 1876, ship-owners could load their vessels until their decks were almost awash, resulting in a dangerously unstable condition
A ship's draft/draught is the "depth of the vessel below the waterline measured vertically to the lowest part of the hull, propellers, or other reference point". [1] That is, the draft or draught is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed.
Graphical representation of the dimensions used to describe a ship. Length between perpendiculars (often abbreviated as p/p, p.p., pp, LPP, LBP or Length BPP) is the length of a ship along the summer load line from the forward surface of the stem, or main bow perpendicular member, to the after surface of the sternpost, or main stern perpendicular member.
Full load displacement and loaded displacement have almost identical definitions. Full load is defined as the displacement of a vessel when floating at its greatest allowable draft as approved by the load line assigning authority which is either the flag state (USCG etc) or a classification society (and designated by its " load line "). [ 9 ]