The gigantic Soviet-era ekranoplan jet hover plane needed a crew of 15! Though probably some were missile-launch guys, radar guys, and other stuff unrelated to “flying” it. @LSLGuy had a great post about it. It had at least two “cockpits”, one for actually driving the thing, and another which seems somewhat analogous to a flight engineer’s station that had to do with controlling and monitoring the engines and other systems, both of which had two crew members each. Some interesting pics at the “Belly of the Beast” link.