That might be a costly recovery, WM. According to Wikipedia:
"The Southern Ocean lies in the Southern Hemisphere. It has typical depths of between 4,000 and 5,000 meters (13,000 to 16,000 ft) over most of its extent with only limited areas of shallow water. The Antarctic continental shelf appears generally narrow and unusually deep, its edge lying at depths up to 800 meters (2,600 ft), compared to a global mean of 133 meters (436 ft)."
What this means is that the depth of the water gets REAL deep REAL fast the further you get from shore, a lot more than around, say, Virginia Beach or the Florida coast. I remember reading that in most areas around the Southern Ocean as it's called, the depth of the water increases 0.5 to 1.0 feet per FOOT away from shore. So, if the Antarctic Cruiser's ice flow melted when the Cruiser was 1,000 feet away from land, it could very well be in 500-1,000 feet depth of water.
Recovery of an object from more than 100 foot depth increases geometrically the deeper it is. Unless the Cruiser is made of gold or has the bones of Jimmy Hoffa on it, I doubt many people could afford the recovery of this vehicle, regardless of how historically interesting it is.