

Salt water is famously a forgiving environment to build in, and oceanic weather is benign and predictable. Not that it would be a problem anyway, because move-fast-and-break-things people can be trusted to do the right thing when it comes to running delicate equipment in places more hostile than mid california, and will not skimp on staffing and maintenance. You can look at all the the successful seasteading operations to see how well this will go.
There are also no problems I can foresee with putting a bucketload of fissiles in international waters, with no scope for finally uniting old-school piracy with new-school piracy, either. This plan is great, and no-one will have a problem with it.

Duh. Everybody knows the market never stays irrational for long, and you should just tough it out.