"The G.F.S. Tyr is an Anhur-Class Galactic Federation warship that was forced to land on Aether eight days prior to the events of Metroid Prime 2: Echoes. The vessel's crew is made up of the GFMC Task Force Herakles Squad of Galactic Federation Troopers lead by Captain A. Exeter. Anhur-class warships are state-of-the-art Federation vessels, designed to police and defend planetary systems. During her visit on Aether Samus gets the rare opportunity to visit an Anhur-class ship."
-http://www.metroidwiki.org/wiki/G.F.S._Tyr