GHS Dynamic Stability

In early 2021, Creative Systems Inc., makers of GHS, released the Dynamic Stability (DS) module.
Developed in collaboration with ABS, DS addresses the new coming IMO Second Generation Intact Stability Criteria (SGIS). This new set of criteria have been finalized by the IMO sub-committee on Ship Design and Construction (SDC) in 2020.
The horizon at which SGIS will be fully enforced is still under discussion, but it is certainly a necessity for ship owners, designers, naval architects to already incorporate the new guidelines into their design process.
And so is true also for Administrations in charge of ship certification, who need to be ready for this significant regulatory shift.
GHS’s DS module interfaces with the Advanced Features (AF) and SeaKeeping (SK) Modules to offer level 1 and level 2 support for all five dynamic failure modes described in the SGISc:

Dead Ship (DS),
Excessive Acceleration (EA),
Pure Loss of Stability (PL),
Parametric Roll (PR),
Surf-riding/Broaching (SB)

New and existing designs may be easily assessed for dynamic stability vulnerability using an intuitive and direct syntax via the DYNSTAB command.
Because it truly integrates hydrostatics & hydrodynamics into a single interface, and today with the addition of DS, GHS is more than ever the software of reference for the full ship stability assessment, today and for the years to come.

Any question? Feel free to inquire with us NDAR on the topic!

Further reading on SGIS and GHS Dynamic Stability:
https://www.imo.org/en/MediaCentre/MeetingSummaries/Pages/SDC-7.aspx
https://www.mdpi.com/2077-1312/8/7/494/pdf
http://www.ghsport.com/cows/190/
https://www.marinelink.com/news/addressing-new-imo-guidelines-second-483162