The
Borealis is an
Aperture Science research vessel introduced in
Half-Life 2: Episode Two. According to Isaac Kleiner, Aperture was working on a promising project, but in their rush to beat
Black Mesa for funding, they neglected ordinary safety rules and it appears that the ship simply disappeared with parts of her dry dock, which earned her an almost legendary stature. It is assumed that the
Borealis contained an immensely powerful and dangerous secret.
