![]() ![]() Biran: Ship Hydrostatics and Stability, 1st edn. Derrett: Ship Stability for Masters and Mates, 5th edn. 1 (Society of Naval Architects and Marine Engineers, Alexandria 1988)ĭ.R. Lewis: Principles of Naval Architecture: Stability and Strength, Vol. Muckle: Muckle’s Naval Architecture, Marine Engineering Series, 2nd edn. Ertekin: Setdown of a catenary-moored gravity platform, Mar. Bouguer: Traité du Navire (Research Publications, New Haven 1746), Microfilmī. This process is experimental and the keywords may be updated as the learning algorithm improves. These keywords were added by machine and not by the authors. These and the risks associated with flooding are addressed through hull subdivision and damaged analysis in this chapter. To address these issues, regulators set criteria, with embedded safety factors, and they require sufficient reserve stability beyond the equilibrium of the platform. Assumptions are needed to calculate the applied loads, and stability analysis does not usually include the upsetting dynamic forces. Overturning moments that account for all static loads, including environmental, operational, and live loads are listed as well. At small heel and trim angles, the metacentric height and displacement may be used directly to calculate the righting arm. Methods of calculating the righting moment that varies with the heel angle are discussed. ![]() In doing so, the stability of a platform (its ability to be at or to recover equilibrium at acceptable heel and/or trim angles) is assessed by comparison of the righting moment to overturning moments from external loads. Intact and damaged stability of floating structures are discussed and essential formulations of the associated problems are introduced. In this chapter, we cover the buoyancy and stability of offshore platforms from both viewpoints of theoretical and regulatory issues. It focuses on averting any failures associated with excessive heel or trim, capsizing, catastrophic loss of buoyancy, or even sinking. Stability analysis is a major aspect of the design of offshore platforms. ![]()
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