The U.S. Army Sea Duty Ribbon (ASDR) was established on 17 April 2006 as the "Army Sea Duty Ribbon"; its name was changed to its current moniker on 30 June 2010. It may be awarded to active duty soldiers who complete two cumulative years of sea duty on a Class A or B U.S. Army vessel. Duty aboard U.S. Navy, U.S. Coast Guard, U.S. Navy Military Sealift Command, NOAA vessels, or aboard Army leased or foreign and non–military vessels may also qualify if soldiers serving on those vessels have a formally assigned primary mission that is accomplished underway, are in an active status, and are approved for creditable sea service by the Career Sea Pay Office. The Chief of the Marine Qualification Division is the approval authority for award of the ASDR to eligible service members. The ASDR may be awarded retroactively to those personnel who were credited with qualifying service, as defined in regulations, after August 1, 1952. Subsequent awards are authorized upon completion of an additional two years of cumulative sea duty under qualifying conditions.