Deepsea Delta semi-submersible drilling rig in the North Sea Comparison of deepwater semi-submersible (left) and drillship (right). A semi-submersible platform is a specialised marine vessel used in offshore roles including as offshore drilling rigs, safety vessels, oil production platforms, and heavy lift cranes. They have good ship stability and seakeeping, better than drillships.
Dynamic Stability of Ships in Waves Authors: Tim Gourlay Timothy Lilienthal Australian Maritime College Abstract and Figures A method is proposed for evaluating the overall dynamic

Ship - Maneuvering, Directional Control, Navigation: A ship is said to be directionally stable if a deviation from a set course increases only while an external force or moment is acting to cause the deviation. On the other hand, it is said to be unstable if a course deviation begins or continues even in the absence of an external cause. A directionally unstable ship is easy to maneuver, while

The paper provides a full description and explanation of the probabilistic method for ship damage stability assessment from its conception to date with focus on the probability of survival (s-factor), explaining pertinent assumptions and limitations and describing its evolution for specific application to passenger ships, using contemporary numerical and experimental tools and data. It also What is dynamic stability? It is defined as the energy required in heeling the ship from upright equilibrium till the angle of heel in question. It gives the stability information of a vessel considering dynamic behavior of the sea. It is expressed in terms of area under righting moment curve or GZ curve. Its unit is meter-radians.
Ship - Structural Integrity: The simplest structural description of a ship is that its hull is a beam designed to support the numerous weights that rest upon it (including its own weight), to resist the local forces produced by concentrated weights and local buoyant forces, and to resist the several dynamic forces that are almost certain to occur. As with any structure, stresses at all points
yPEOiUJ. 64 231 307 458 322 347 139 186 176

what is dynamic stability of ship