Huge cube shaped spacecraft, operated by the Borg collective. The first known Federation encountered with a Borg ship was by the Enterprise-D near System J-25 in 2365. The Borg vessel had a highly decentralized design, and Enterprise-D personnel reported finding no specific bridge, engineering, or living areas. Combat experience showed the ship to be equipped with powerful energy weapons and capable of repairing major damage almost immediately, including the impact of direct phaser hits. A Borg cube ship made its way into Federation space in 2373 and proceeded to Earth on stardate 50893. It was destroyed by a Starfleet armada, but was able to launch a small Borg sphere that traveled into Earth's past on a mission to prevent Zefram Cochrane's first warp flight in 2063.