To complement its existing safety inspection regime for foreign-flagged vessels operating in U.S. waters, the U.S. Coast Guard Friday announced an additional layer of risk-based safety oversight for mobile offshore drilling units (MODUs) as part of an ongoing review of marine safety policies following the April 2010 Deepwater Horizon explosion, fire, and subsequent oil spill. Currently, U.S.- and foreign-flagged MODUs operating in U.S. waters undergo annual examinations to verify compliance with domestic laws, regulations and international conventions – ensuring that a vessel’s major systems are in compliance and that crew training and performance, such as lifesaving and firefighting drills, meet all applicable standards.