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Used mainly to determine the minimum water depth for safe passage of a vessel and to calculate the vessel's displacement (obtained from ship's stability tables) so as to determine the mass of cargo on board. Draft, Air – Air Draft/Draught is the distance from the water line to the highest point on a ship (including antennas) while it is ...
A lane meter is defined as a strip of deck one meter long. A lane is conventionally 2 meters wide, so that a lane meter is equivalent to 2 square metres (21.528 sq ft). [1] The rule of thumb is that a car on a car ferry will need 6 lane meters, and a European semitrailer 18 lane meters. [citation needed]
This length is important while docking the ship. It is the most commonly used way of expressing the size of a ship, and is also used for calculating the cost of a marina berth [1] (for example, £2.50 per metre LOA). LOA is usually measured on the hull alone. [2] For sailing ships, this may exclude the bowsprit and other fittings added to the hull.
The vessel's clearance is the distance in excess of the air draft which allows a vessel to pass safely under a bridge or obstacle such as power lines, etc.A bridge's "clearance below" is most often noted on charts as measured from the surface of the water to the underside of the bridge at the chart datum Mean High Water (MHW), [3] [4] a less restrictive clearance than Mean Higher High Water ...
Metric shipping factor examples: 5000 cm 3 /kg <=> 200 kg/m 3; 6000 cm 3 /kg <=> 166.667 kg/m 3; 7000 cm 3 /kg <=> 142.857 kg/m 3; When calculating the dimensional weight with metric measurements, the length, width, and height are measured in centimeters (cm) and the result is stated in a nominal kilogram (kg) dimensional weight band (usually ...
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 ...
Before the advent of nautical charts in the 14th century, navigation at sea relied on the accumulated knowledge of navigators and pilots.Plotting a course at sea required knowing the direction and distance between point A and point B. Knowledge of where places lay relative to each other was acquired by mariners during their long experience at sea.
The ship's hydrostatic tables show the corresponding volume displaced. [4] To calculate the weight of the displaced water, it is necessary to know its density. Seawater (1,025 kg/m 3) is more dense than fresh water (1,000 kg/m 3); [5] so a ship will ride higher in salt water than in fresh. The density of water also varies with temperature.