Location from remembrance-of-earths-past by
A 1,500-meter Stellar-class warship of the Asian Fleet — the only vessel to survive the Battle of Darkness with crew intact, then to enter and return from the 4th dimension, and to carry its 1,273 souls toward NH558J2 as the seed of human civilization in the dark.
Blue Space is humanity in microcosm — a thousand and three hundred people in a metal tube, two thousand years from the nearest possible new home. After the Battle of Darkness she carries the guilt of having killed her sister ships first and the pride of having survived second. Her brief entry into the 4th dimension, alongside Gravity, gives her the means to disable a Trisolaran droplet and the company of the sentient tomb-Ring. She carries on.
A long fusion-driven warship, 1,500 meters from bow to drive bell, slim and matte-gray, with the cyclical antenna ring of the gravitational-wave generation. Inside: long zero-G corridors, magnetic-soled boots, a bridge full of hexagonal screens. After the Battle of Darkness, sections of her corridors carry small plaques for the dead.