HydroD version 4.2-04 now gives the user the option to use Wadam or HydroD to compute the mass matrices. It also includes quadratic roll damping in Wadam (this requires that Wadam version 8.1-08 is installed). In case the user has imported the structural model into HydroD, it is now possible to start the linear structural analysis (Sestra) from inside the HydroD user interface. The meshing of free surface for time domain analysis is significantly improved and allows for more user control of the mesh density. Time domain analysis has been extended to also include Stoke's 5th order wave theory for infinite water depth. Finally, when making a sea state it is possible to specify a cut off period for irregular wave conditions.

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• HydroD September 2009 Download
• HydroD Release Note