Where can I find Mercury 2?
From Delta Station Dock, head two clicks right of South. You will pass the Purple Vents. Continue down until you see the Mercury II wreck; it should only take a few seconds in your Seatruck.
What happened to Mercury II?
Various crew logs can be found with bits of the backstory – several of which imply that, like the Aurora and Degasi, the Mercury II was shot down by the Quarantine Enforcement Platform and later destroyed on attempted take off.
Can you enter the Mercury 2?
Mercury 2 Bow (Front Section) Location
This section is deeper down, roughly 250 meters or so, so be prepared to dive. To get the Parallel Processing Unit fragment, go into the hallway through the hole in the top of the wreck, and use the Laser Cutter to open the sealed door.