This is a reference to the Aperture ship Borealis seen at the end of Half Life 2: Episode 2. Ship Overboard – Portal 2 Wiki Guide – IGN Borealis (Aperture Science ship) – Combine OverWiki, the … It first appeared in Half-Life 2: Episode 2, but a reference to it can be … 3. The Borealis is a scientific research vessel owned by Aperture Science. In Portal 2, the Borealis' dry dock can be found in the 1970's section of Test Shaft 09, near the offices where Chell finds GLaDOS in the bird's nest. If you are looking for portal 2 borealis, check the results below : 1.
