Great batcave.
Did they fix it up so it was partially operable? Or leave it as expendable?
Which type of cruiser?
They are a couple of heavy 80kt cruisers from my non-OTU game. One an enemy cruiser and the other a friendly. Neither is operational - the salvage teams just cleaned out what they could and left them that way. Since the system used to hold the largest depot in that section of the "front" during the war, and was the last stand of the Confederation Marines and Navy against the final push of the alien empire (yes, very space opera), and the battle lasted a week while forces from both sides kept jumping in to reinforce each other the whole place is now a gigantic war memorial. The (formerly the Terran Confederation) Terran Empire - the victors - salvaged what they could, placed memorial markers and beacons to allow for visitors (closely escorted) to safely navigate through and pay respects. It is like a system-wide Truk Lagoon.
So the players just left the cruiser they are using alone and did what work they needed to to allow it to hold atmosphere and when their ship is there they use it for power, otherwise they have small generators to keep everything from freezing when they leave. Since the enemy ship is radiating hot rads from it's engineering section the small amount of power that escapes form the heavy armor of the ship the player's are living in is lost in the fuzz. The only risk, is that they can't dare to use active scanning to make their way to their hidey hole, or in and out of the system - they have to make their rolls to navigate, then pilot their way through a safe corridor of debris and hulks until they can dock or jump out without getting caught.
The picket boat crew they have bribed looks the other way, but they aren't always where the players need them to be - they have a schedule for the patrols, but there have been some close calls when they needed to run to ground and lick their wounds...and their buddies weren't on patrol when they jumped in that day due to the rotation.
The cruiser is left dead, but that's the point: if signs of life started to show up - even if they could get the two ships separated, etc.., then all heck would break loose with the Navy guys keeping watch over the Arlington Cemetery-Truk Lagoon of my campaign. There is no particular memorial attached to this ship, either - its just one of the hundreds of ships like it that played a minor part along the edges of the major fight centered around control of the Naval Depot and the two gas giants. There are 250kt carriers and 150kt battleships adrift around that area and those are what the tourists, under escort, want to see anyway...not a couple of anonymous hulks welded together by their collision and several days away form the tiny area the Navy lets people see.