Myrlie Evers was among a thousand people who attended the christening of the USNS Medgar Evers in San Diego on Saturday.
Naval officials, politicians, local citizens and members of the National Association for the Advancement of Colored People were on hand to hear a speech honoring Evers by Ray Mabus, the Secretary of the Navy.
The 689-foot cargo ship will deliver food, ammunition, fuel and other provisions to Navy combat ships at sea.
The vessel was built in San Diego by General Dynamics NASSCO.
Medgar Evers, a World War II veteran and field secretary for the NAACP, was shot to death in 1963.