U.S.S. Bonchune NCC-70915
The Federation Starship Bonchune, a Nebula class cruiser, attempted to prevent Romulan forces from stealing the experimental U.S.S. Prometheus NX-74913 in 2373. In 2377, the Bonchune was part of a Starfleet task force that intercepted a Borg Sphere that emerged from a Transwarp conduit near Earth; the Sphere was destroyed immediately after arrival in the Alpha Quadrant, revealing the U.S.S. Voyager NCC-74656 within, making its safe return home.