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In a boat, the equivalent of the spring stiffness is the distance called "GM" or "metacentric height", being the distance between two points: "G" the centre of gravity of the boat and "M", which is a point called the metacentre. Metacentre is determined by the ratio between the inertia resistance of the boat and the volume of the boat. (The ...
The longitudinal/X axis, or roll axis, is an imaginary line running horizontally through the length of the ship, through its centre of mass, and parallel to the waterline. A roll motion is a side-to-side or port-starboard tilting motion of the superstructure around this axis.
Geodetic latitude and geocentric latitude have different definitions. Geodetic latitude is defined as the angle between the equatorial plane and the surface normal at a point on the ellipsoid, whereas geocentric latitude is defined as the angle between the equatorial plane and a radial line connecting the centre of the ellipsoid to a point on the surface (see figure).
The Earth-centered, Earth-fixed coordinate system (acronym ECEF), also known as the geocentric coordinate system, is a cartesian spatial reference system that represents locations in the vicinity of the Earth (including its surface, interior, atmosphere, and surrounding outer space) as X, Y, and Z measurements from its center of mass.
This is a list of boat types. For sailing ships, see: List of sailing boat types
The X Boat, also called the Cub, is an American sailing dinghy that was designed by John O. Johnson as a one-design racer and first built in 1932. [1] [2] Production
The Houston Fire Department said in an X statement that they are on the scene and assisted deboarding the plane, which was departing from George Bush Intercontinental Airport and heading to New ...
The mast is set far back in the boat to make room for the large asymmetric spinnaker. [3] [4] The boat has a fast handicap, with a Portsmouth Yardstick of 870, [5] designed with racing in mind. For this reason it is highly suitable for more experienced sailors. [3] The boat does not have a trapeze, [2] but instead makes use of wide wings. [3]