For the mega nuclear powered cruise ship, you can have a sliding deck that everyone pre-loads onto for fast boarding and exit. Imagine if an entire floor could

For the mega nuclear powered cruise ship, you can have a sliding deck that everyone pre-loads onto for fast boarding and exit. Imagine if an entire floor could slide out onto the dock, and the floor above could slide into the ship at the same time. Both floors hold all people exiting and entering the ship.