If you’re going to dream, dream big, the saying goes. It is precisely what Roger Gooch, a marketing visionary, and a few other like-minded dreamers are doing in a small office in Altamonte Springs, Florida.

They are working on the Freedom Ship-City at Sea project, a plan for a larger-than-life cruise vessel that, if ever built, would carry 50,000 residents and circle the globe every 2½ years, making weekly stops 25km (about 15 miles) off major ports.