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2. Ship measurements - Wikipedia

   en.wikipedia.org/wiki/Ship_measurements

   Deadweight tonnage (DWT) is a measure of how much weight a ship can carry. [1] [2] [3] It is the sum of the weights of cargo, fuel, fresh water, ballast water, provisions, passengers, and crew. [1] Draft or draught (d) or (T) – The vertical distance from the bottom of the keel to the waterline. Used mainly to determine the minimum water depth ...

3. Rugosity - Wikipedia

   en.wikipedia.org/wiki/Rugosity

   Rugosity calculations are commonly used in materials science to characterize surfaces, amongst others, in marine science to characterize seafloor habitats. A common technique to measure seafloor rugosity is Risk's chain-and-tape method [2] but with the advent of underwater photography less invasive quantitative methods have been developed.

4. Hull (watercraft) - Wikipedia

   en.wikipedia.org/wiki/Hull_(watercraft)

   Hull speed – Speed at which the wavelength of a vessel's bow wave is equal to the waterline length; Lift (force) – Force perpendicular to flow of surrounding fluid; Monohull – Type of boat or ship having only one hull; Multihull – Ship or boat with more than one hull; Naval architecture – Engineering discipline of marine vessels

5. Freeboard (nautical) - Wikipedia

   en.wikipedia.org/wiki/Freeboard_(nautical)

   In sailing and boating, a vessel's freeboard is the distance from the waterline to the upper deck level, measured at the lowest point of sheer where water can enter the boat or ship. [1] In commercial vessels, the latter criterion measured relative to the ship's load line, regardless of deck arrangements, is the mandated and regulated meaning. [2]

6. Waterline - Wikipedia

   en.wikipedia.org/wiki/Waterline

   Waterline of a ship. The mark above the waterline indicates the Plimsoll line. The waterline is the line where the hull of a ship meets the surface of the water.. A waterline can also refer to any line on a ship's hull that is parallel to the water's surface when the ship is afloat in a level trimmed position.

7. Waterline length - Wikipedia

   en.wikipedia.org/wiki/Waterline_length

   A vessel's length at the waterline (abbreviated to L.W.L) [1] is the length of a ship or boat at the level where it sits in the water (the waterline). The LWL will be shorter than the length of the boat overall (length overall or LOA) as most boats have bows and stern protrusions that make the LOA greater than the LWL. As a ship becomes more ...