Navy ships have been designed and operated for the past 50 years in accordance with empirically based stability criteria which were derived for wall-sided and flared monohull vessels of World War II vintage.
Existing ship stability criteria do not adequately address dynamic stability, nor the stochastic nature of the wave environment. These criteria are typically based on hydrostatics and include margins, which are only approximate means of accounting for ship dynamics. The stability criteria do not account for a ship’s dynamic behaviour in extreme seas. Even modern hull forms may experience large roll angles in extreme sea conditions.
As warships must be able to operate in high sea states and at high speeds, this problem is of particular concern to navies. Stability requirements can have a major impact on decisions made during the design of these ships, such as the location of the center of gravity. In addition, such criteria dictate the inherent levels of safety against capsizing. Therefore, there is a clear need to develop dynamic stability criteria for practical design purposes on a rational basis.
If you are member of the CRNAV and qualified to access to protected pages but you do not have a username/password, please send an e-mail to email@example.com
Participants contribute their expertise and technology to the group's research efforts. MARIN provides the CRNAV chairmanship and secretariat, as well as overall project management.