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Draft markings on the stern of the Cutty Sark, an example of the Imperial system of such markings. The draft or draught of a ship is a determined depth of the vessel below the waterline, measured vertically to its hull's lowest—its propellers, or keel, or other reference point. [1] Draft varies according to the loaded condition of the ship. A ...
Graphical representation of the dimensions used to describe a ship. Dimension "b" is the beam at waterline.. The beam of a ship is its width at its widest point. The maximum beam (B MAX) is the distance between planes passing through the outer sides of the ship, beam of the hull (B H) only includes permanently fixed parts of the hull, and beam at waterline (B WL) is the maximum width where the ...
Beam – A measure of the width of the ship. There are two types: Beam, Overall (BOA), commonly referred to simply as Beam – The overall width of the ship measured at the widest point of the nominal waterline. Beam on Centerline (BOC) – Used for multihull vessels. The BOC for vessels is measured as follows: For a catamaran: the ...
Hogging is the stress a ship's hull or keel experiences that causes the center or the keel to bend upward. Sagging is the stress a ship's hull or keel is placed under when a wave is the same length as the ship and the ship is in the trough of two waves.
Midship coefficient (C m or C x) is the cross-sectional area (A x) of the slice at midships (or at the largest section for C x) divided by beam x draft. It displays the ratio of the largest underwater section of the hull to a rectangle of the same overall width and depth as the underwater section of the hull.
abaft the beam Farther aft than the beam; a relative bearing of greater than 90 degrees from the bow; e.g. "two points abaft the beam, starboard side" would describe "an object lying 22.5 degrees toward the rear of the ship, as measured clockwise from a perpendicular line from the right side, center, of the ship, toward the horizon". [4 ...
Beam Draft Example Ultra Large Container Vessel (ULCV) 14,501 and higher 1,200 ft (366 m) and longer 160.7 ft (49 m) and wider 49.9 ft (15.2 m) and deeper With a length of 400 m, a beam of 59 m, draft of 14.5 m, and a capacity of 18,270 TEU, ships of the Maersk Triple E class are able to transit the Suez canal. [35]
Seawaymax vessels are 225.55 metres (740.0 ft) in length, 23.80 metres (78.1 ft) wide, and have a draft of 8.08 metres (26.5 ft) and a height above the waterline of 35.5 metres (116.5 ft). [1] A number of lake freighters larger than this size cruise the Great Lakes and cannot pass through to the Atlantic Ocean .