On the wreck of the Z15A, near the Great Plain, there are three wrecks near a large lake/sea that always attract attention. The Green, Red and Blue ships are not spaceships, but rather waterborne craft from the ship’s former life, all now rusted wrecks that will float no longer.
All three can be found in The Galleries. This area, located port-side amidships, are where the structure of the ship blends seamlessly into buildings on the Great Plains itself. Many of the transportation links into the inner world start or end here, including the docks that these ships presumably used.
All three ships are huge – the intact hull of the Red Ship is some 1000m in length, while the less intact Green and Blue ships were estimated to be in the 750 length.
The most ruined of all three ships, all that is left of the Blue Ship is half a hull rotting. Large parts of this ship have apparently been cut up over the possible centuries it has been a wreck, possibly even as far back as the original inhabitants. Most of its equipment has similarly been carefully gutted, which speaks to re-purposing.
The Green Ship, resting on water-sodden grass, looks to have been deliberately run aground. On its hull can be found the remnants of scaffolding and work, possibly after it was run aground.
Unlike the other two ships, the Green Ship looks to have been a pleasure craft of some sort, with many features still found on terrestrial or space cruise ships today, including many open areas and more.
With lines that are reminiscent of an Earth-submarine during their second great war, this ship is the most intact in some ways, as the full hull is still visible. As the seas of the Great Plain are never more than a few metres deep at most (one way we know Z15A original inhabitants were not aquatic), it is unlikely the Red Ship actually was a submarine.
Inside the Red Ship is a maze of small passageways, with some decks being less a metre in height. On the side of the ship are doors that open, possibly for launching or retrieving other craft.
The Galleries are the main interface between the rest of the ship and the Great Plains. While other connections exist, only in the Galleries are there big enough connections to move full small ships or big equipment into the Great Plains.
The Galleries are named mostly because of the view they give – across the Great Plain. There are hundreds of km of window overlooking the Great Plain, parts of which could be considered places to rest or stop – whether to eat or not is unknown at this point.
The Main Gallery is located exactly amidships on the port side, and contains the two largest airlocks on the ship, as well as a cavernous space between the two to allow transfer of materials. The outer pairs have long been breached, leaving most of the galleries open to space. But the inner pair are both intact. Each airlock was a 1 km cube of space, allowing moving all but the largest of vehicles all the way onto the Great Plain.