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  2. Propeller theory - Wikipedia

    en.wikipedia.org/wiki/Propeller_theory

    The momentum theory or disk actuator theory – a theory describing a mathematical model of an ideal propeller – was developed by W.J.M. Rankine (1865), Alfred George Greenhill (1888) and Robert Edmund Froude (1889). The propeller is modelled as an infinitely thin disc, inducing a constant velocity along the axis of rotation.

  3. Missing man table - Wikipedia

    en.wikipedia.org/wiki/Missing_man_table

    The table is usually set close to, or within sight of, the entrance to the dining room. For large events, the missing man table may be set for seven places representing each of the six armed services (Army, Navy, Marine Corps, Air Force, Space Force, and Coast Guard), with the seventh symbolizing the civilians who died during armed conflict. [7]

  4. Chine (boating) - Wikipedia

    en.wikipedia.org/wiki/Chine_(boating)

    Chine (boating) A chine in boat design is a sharp change in angle in the cross section of a hull. The chine typically arises from the use of sheet materials (such as sheet metal or marine ply) as the mode of construction.

  5. Displacement (ship) - Wikipedia

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

    Loaded displacement. Loaded displacement is the weight of the ship including cargo, passengers, fuel, water, stores, dunnage and such other items necessary for use on a voyage. These bring the ship down to its "load draft", [8] colloquially known as the "waterline". Full load displacement and loaded displacement have almost identical definitions.

  6. Metacentric height - Wikipedia

    en.wikipedia.org/wiki/Metacentric_height

    For small angles, M can also be considered to be fixed, while B moves as the ship heels. The metacentric height ( GM) is a measurement of the initial static stability of a floating body. It is calculated as the distance between the centre of gravity of a ship and its metacentre. A larger metacentric height implies greater initial stability ...

  7. Ship stability - Wikipedia

    en.wikipedia.org/wiki/Ship_stability

    Ship stability is an area of naval architecture and ship design that deals with how a ship behaves at sea, both in still water and in waves, whether intact or damaged. Stability calculations focus on centers of gravity, centers of buoyancy, the metacenters of vessels, and on how these interact.