Green Hill Softwares - Design and evaluation software for ships and floating structures

GHS is a software system for the design and evaluation of all types of ships and floating structures. It addresses flotation, trim, stability and strength by calculating the forces involved using mathematical/geometrical models of the vessels. 

Developed by Creative Systems, Inc. specifically for today's computers, GHS has become widely recognized as the most productive tool of its kind. It is continually being extended and improved to ensure its continued leadership and excellence in response to increasing sophistication of stability standards and computing technology. GHS is well-proven, reliable, respected by regulatory agencies and in constant use by major design firms and shipyards. 

GHS is truly general-purpose. Not only does it handle ship hulls, but also anything that floats or contains liquid - or both. It has been used to analyze and/or design submarines, SWATHs, dry docks, drilling platforms, 10-foot sailboats, 300-meter freighters, floating bridges, and even a floating golf green. GHS addresses simple and complex stability issues including intermediate stages of flooding, spilling of cargo, and optimizing against complex stability criteria.