I have a mildly exotic proposal for you. I was browsing through some scrap & derelict auctions, and I stumbled over a charming little gem named the Sunshine Seeker. It's a 15k-tonnage watership originally built for fishing, converted for environmental monitoring, and decommissioned in 809, currently enjoying a quiet life of slow decay at Los Angeles' Coiner Beach. Apparently that's where most of the planet's waterships end up to wait for deconstruction by scrappers or erosion, depending on which happens first. You learn something new every day.
Anyway, I sent the consigner a friendly message, asking if the ship can be disassembled in any convenient fashion for off-planet transport. They told me it wasn't intended for it, but a good team of engineers could make it so in a few days, if required.
Apparently it's mostly just missing the skin, which was some particularly corrosion-resistant alloy they peeled off pretty soon after decommissioning for salvage. It even has most of the environmental monitoring equipment still intact, for what that's worth. It's powered by a typical fusion generator which they assure me, works perfectly fine.
I have to say, I'm intrigued. Because I can think of a certain oceanic planet that could do with some experimental surveying sea-side. The current bid is hovering just under four million credits, and there's only been three changes in the past 48 hours. If they're willing to deliver the pieces to somewhere convenient, let's say Bethlehem, I'm tempted to bid.