centre of immersion

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centre of immersion

The ship's centre of immersion shifts as it tilts in the water.

Definition

Noun: * (Physics) The center of buoyancy: The centre of immersion is the geometric center of the volume of fluid displaced by a floating or submerged object. It is the point through which the buoyant force (the upward force exerted by the fluid) acts.

Usage Notes
  • The term is a specific, technical term used primarily in naval architecture, marine engineering, and physics.
  • It is a crucial concept for calculating the stability of ships, boats, and other floating structures.
  • The shifts as the object tilts or changes its orientation in the fluid, directly affecting its righting moment and stability.
Examples of Usage
  • Noun:
    • The naval architect calculated the centre of immersion to ensure the vessel's stability in rough seas.
    • A stable ship is designed so that its centre of immersion and centre of gravity maintain a proper relationship.
Advanced Usage
  • Metacenter: A key related concept is the , which is the intersection point of the vertical line through the when a ship is tilted and the ship's centerline. The distance between the metacenter and the centre of gravity determines initial stability.
Variants and Related Words
  • Center of buoyancy (noun): This is the more common synonym for , especially in American English.
  • Centre of buoyancy (noun): The British English spelling variant of "center of buoyancy".
  • Buoyancy (noun): The upward force exerted by a fluid.
  • Displacement (noun): The volume or weight of fluid displaced by a floating object.
Synonyms
  • Center of buoyancy: The direct and most frequently used synonym.
  • Center of displacement: A less common but technically accurate synonym.
Related Concepts (Not Phrasal Verbs or Idioms)
  • Centre of gravity: The point where the total weight of an object is considered to act.
  • Righting arm: The horizontal distance between the line of buoyancy (through the ) and the line of gravity, which generates the force to return a tilted ship to upright.
  • Hydrostatics: The branch of fluid mechanics dealing with fluids at rest, within which the concept of the is analyzed.
centre of immersion

The ship's centre of immersion shifts as it tilts in the water.

Noun
  1. (physics) the center of mass of the immersed part of ship or other floating object

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