The Gamma Hydra sector was a region of space. The sector contained the Gamma Hydra system. The Romulan Neutral Zone and the Klingon-Federation border were, also, in this sector. Sections 14 and 15 of the sector were in Federation space, while section 10 was within the Federation-Klingon border. (TOS: "The Deadly Years" ; Star Trek II: The Wrath of Khan) In 2285, the Starfleet Academy Kobayashi Maru exam was a simulated no-win scenario where the USS Enterprise was on a trainng mission in this sector and receives a distress call from the Kobayashi Maru. (Star Trek II: The Wrath of Khan)