Classification society DNV and global container shipping line MSC Mediterranean Shipping Company signed a contract to implement the new DNV Anti-Roll Assist system and ARCS (Anti-Roll for Containerships) class notation in some 100 vessels. With the new contract, MSC is the first company to install the application and the first in the world to implement a ship-specific tool to avoid container losses due to parametric or synchronous rolling.Millions of containers are shipped safely across the world every year, forming the backbone of global trade and commerce. On rare occasions, a combination of environmental, navigational, design, and vessel parameters combine to trigger synchronous and parametric rolling events that can exceed lashing limits. If these events result in container losses, the environmental, financial and reputation damage can be significant.DNV’s new Anti-Roll Assist helps vessel captains to recognize and avoid the risk of parametric and synchronous resonant rolling. By using a ship-specific hydrodynamic database the system can provide a risk picture for the vessel, based on its heading, speed, loading condition, and the environmental conditions.MSC will be the first ship owner to implement the ARCS notation and will integrate the application in their onboard weather routing systems. The contract covers dozens of newbuildings, ships in operation, and vessels to be constructed, ranging in size from 1,800 to MSC’s largest vessels at some 24,000 TEU.