The SS Mount St. Helens was an Oberth-class science vessel, owned by the Daystrom Institute. In 2376, Dr. Bill Hoesch conducted research in the Letchworth Nebula aboard the Mount St. Helens. Orions attacked the ship and left the crew for dead. They were rescued by Captain Steve Tecklenberg. (Star Trek: Pendragon: "Cloak and Dagger", "Salvation", et. al)