Most cruise operators contacted because of the Washington Post explained they did not have any current entire-time inhabitants. But one particular line stands aside as it was constructed for extended-term cruisers: The World — Residences at Sea, which bills alone as “the largest privately owned, household yacht on the planet” https://cruiseforretirement32086.techionblog.com/33516231/living-on-a-cruise-ship-in-retirement-no-further-a-mystery