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  2. Hudson's equation - Wikipedia

    en.wikipedia.org/wiki/Hudson's_equation

    H s is the design significant wave height at the toe of the structure (m) Δ is the dimensionless relative buoyant density of rock, i.e. (ρ r / ρ w - 1) = around 1.58 for granite in sea water; ρ r and ρ w are the densities of rock and (sea)water (kg/m 3) D n50 is the nominal median diameter of armor blocks = (W 50 /ρ r) 1/3 (m)

  3. Active heave compensation - Wikipedia

    en.wikipedia.org/wiki/Active_heave_compensation

    AHC is in most cases a better solution for stabilizing the towed body. The AHC controller uses information about the towing depth and length of the towing line to calculate the angle of the towing line. This is used to drive the winch to compensate for the towing point movement and ensures that the towed device moves smoothly through the sea.

  4. Ship measurements - Wikipedia

    en.wikipedia.org/wiki/Ship_measurements

    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 ...

  5. Kelvin wake pattern - Wikipedia

    en.wikipedia.org/wiki/Kelvin_wake_pattern

    Consider a boat moving from right to left with constant speed v, emitting waves of varying wavelength, and thus wavenumber k and phase velocity c(k), of interest when < v for a shock wave (cf., e.g., Sonic boom or Cherenkov radiation). Equivalently, and more intuitively, fix the position of the boat and have the water flow in the opposite ...

  6. Chart datum - Wikipedia

    en.wikipedia.org/wiki/Chart_datum

    Tide tables give the height of the tide above a chart datum making it feasible to calculate the depth of water at a given point and at a given time by adding the charted depth to the height of the tide. One may calculate whether an area that dries is under water by subtracting the drying height from the [given] height calculated from the tide ...

  7. Italian Sea Group says it is not liable in Mike Lynch yacht ...

    www.aol.com/news/italian-sea-group-says-not...

    Italian Sea Group is not liable in relation to the fatal sinking of Mike Lynch's superyacht, which killed the British tech billionaire and six others, its chief executive said on Tuesday. The ...

  8. Displacement (ship) - Wikipedia

    en.wikipedia.org/wiki/Displacement_(ship)

    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.

  9. Jennifer Lopez Will Keep 8.5-Carat Green Diamond ... - AOL

    www.aol.com/lifestyle/jennifer-lopez-keep-8-5...

    Jennifer Lopez will keep her diamond engagement ring in her divorce settlement with Ben Affleck. Affleck, 52, proposed to Lopez, 53, with an 8.5-carat green diamond engagement ring after they ...