USS Hydra (AK-82)
 USS Hydra (AK-82) ex MV Eben H. Linnell was an Enceladus-class cargo ship commissioned by the U.S. Navy for cargo service in World War II. Hydra was in naval service from 1 January through 19 November 1943 before she was transferred to the U.S. Army for conversion to the Engineer Port Repair ship Madison Jordan Manchester.