Data Center Knowledge has a post on a cruise ships data center. Reading the post it is a classic active-active design with locations is stern and bow. The IT company has installed the system in 6 ships.
What was an interesting fact is there are 9 months allowed for planning, testing, and installing.
What comes to mind is the huge opportunity to apply cloud methods. the below image is from a DCD webinar.
Google, Apple, Facebook, Amazon, and Microsoft all have renewable energy efforts.
Found AWS has a summary in their sustainability page.