STAB2000_The Effect of Crashworthiness and Solid Buoyancy on Survivability of Damaged and Flooded Ro-Ro Ships
A.W. Vredeveldt, J.M.J. Journée and H. Vermeer , The Effect of Crashworthiness and Solid Buoyancy on Survivability of Damaged and Flooded Ro-Ro Ships, STAB 2000, Launcheston, Tasmania / DUT-SHL Report 1220-P
The Effect of Crashworthiness and Solid Buoyancy on Survivability of Damaged and Flooded Ro-Ro Ships
A.W. Vredeveldt, TNO-Centre for Mechanical Engineering, Delft, The Netherlands, J.M.J. Journée, Delft University of Technology, The Netherlands and H. Vermeer, Directorate General Transport, The Netherlands
The SOLAS conventions on survivability of partially flooded ships mention two aspects that are usually not seen as design parameters in the sense that they can be influenced significantly by the naval architect.
These parameters are permeability of flooded compartments and crashworthiness of the ship’s hull. This paper shows the huge potential, with respect to damage survivability, of decreasing the permeability of void spaces and increasing the crashworthiness of the ship side structure. Decreasing permeability can be realised by stowing light weight foam blocks. An increase of the crash resistance of the side can be achieved by applying foam in void spaces as crash barrier. Investigations involving hydrostatics, ship motions, including progressive flooding (water ingress), and crash behaviour are reported. Other important issues such as fire safety, including toxic fumes, and access for surveys are addressed. Results
are shown for an existing Ro-Ro ferry, ready for her midlife refit.