AN ALTERNATIVE APPROACH TO DETERMINE A VESSEL'S CENTRE OF GRAVITY: THE CENTRE OF BUOYANCY METHOD

The location of a ship's vertical centre of gravity (KG) is an important measurement needed to estimate the initial stability of a vessel. Traditionally, this measurement is obtained by determining the metacentric height (GM) using results from the inclining experiment. Such an approach is valid only for hull forms that are inclined to a small angle such that the metacentre remains stationary. This paper documents an alternative method for finding KG, called the centre of buoyancy method, which is based on the location of the centroid of the displaced volume. While the centre of buoyancy method is valid for all ships, it is especially suited for vessels of unusual form. For such vessel, the location of the metacentre may change significantly at small angles of inclination, thereby making the conventional inclining reduction inaccurate. This paper addresses the need for the centre of buoyancy method and details the steps required for its application.

  • Supplemental Notes:
    • Ocean Engng, v 22 n 6, Aug 1995, p 563 [8 p, 4 ref, 5 fig]
  • Authors:
    • Wilczynski, V
    • Diehl, W J
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00717479
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 4 1996 12:00AM