re: #76 Backwoods_Sleuth
Carnival, which owns everyone from Carnival to Cunard to Holland America and Costa, flags all their ships in places like Liberia or Bermuda to avoid American regulation and taxes. That is it.
The company purposefully flags them overseas as a matter of convenience and expediency to avoid regulation that might cut into their bottom line - like health and safety regulations.
Things that might come in handy to prevent outbreaks.