Well, you can reduce maintenance issues with the cooling system by using radiators and minimizing the amount of parts and eliminating the amount of moving parts altogether that have to be in direct contact with seawater. As I said above, I think the only benefit doing this has over the many others ways we can design data centers is data sovereignty, which isn't a good reason imo. My whole point in this thread was that there was no new technology or major development to make this happen.