Authors: Umeda N.; Kamo T.; Ikeda Y.

Source: Marine Technology, Volume 41, Number 1, 1 January 2004 , pp. 45-49(5)

Publisher: Society of Naval Architects and Marine Engineers (SNAME)

Abstract:

The authors raise several points for discussion to develop theoretical modeling of damaged stability in waves. First, hydrodynamic modeling of behaviors of a damaged ship in waves is discussed in the light of multiple time scale expansion. This provides a theoretical background to calculate hydrodynamic forces acting on a hull with sinkage and heel due to water accumulation inside the hull taken into account. Second, the reason why the International Towing Tank Conference (ITTC) benchmark testing for a damaged ship resulted in insufficient prediction of roll motions is discussed based on results of model experiments with a flooded compartment model. Third, survivability of a damaged ship with multiple decks in a damaged compartment is discussed in the light of model experiments on flooding of a pure car carrier (PCC) in calm water and waves. The experimental study shows that survivability of such a ship is different from that obtained in a static assumption even in calm water, and its dynamic behaviors in waves significantly depend on initial state and transient process of flooding. If so, the model test method used in the Stockholm Agreement can be inappropriate for this type of ship.

Document Type: Research article

Publication date: 2004-01-01

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• Marine Technology is dedicated to James Kennedy, 1867-1936, marine engineer, and longtime member of the Society, in recognition and appreciation of his sincere and generous interest in furthering the art of ship design, shipbuilding, ship operation, and related activities.
  
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