||This award was approved by the Secretary of the Navy on May 22, 1980. It recognizes the unique and demanding nature of sea service and the arduous duty attendant with such service deployments. The award of the ribbon was made retroactive to August 15, 1974. It is presented to officers and enlisted personnel of the U.S. Navy and Marine Corps assigned to U.S. homeported ships and overseas ships, deploying units, or Fleet Marine Force (FMF) commands, for 12 months accumulated sea duty, or duty with FMF, which includes at least one 90 consecutive day deloyment. Sailors can now earn the award after completing two 80-day or longer deployments in a 12-month period. This change applies to deployments commencing on or after Oct 18, 1991.