A tranwarp chamber was the section of a Borg vessel which housed
the transwarp drive. Amongst the most important pieces of
technology located in the chamber was the transwarp coil, the
component responsible for the generation of transwarp conduits.
Located deep within the ship, it was heavily shielded to prevent
penetration by transporter beams. In 2368, a Borg sphere crashed
on a planet in the Delta Quadrant, with only four surviving
drones. As the vessel's transwarp chamber was approaching
critical pressure, threatening an explosion, the drones were
forced to evacuate the area. (VOY: "Survival Instinct") In 2375,
the crew of the USS Voyager developed "Operation Fort Knox," a
plan to steal a transwarp coil with which to shorten their
journey back to the Alpha Quadrant. As transport directly inside
the transwarp chamber was impossible, the boarding party was
forced to beam into one of the adjacent sections. Ensign Harry
Kim and Lieutenant Commander Tuvok subsequently made their way
to the ship's primary shiel