In the rooms, if the Book was dropped, the floor raised it mechanically, but the gangway to the air-ship was not so prepared, and the sacred volume lay motionless.
I then considered leaving my stateroom. Was I free or still a prisoner? Perfectly free. I opened my door, headed down the gangways, and climbed the central companionway.
Captain Nemo led me to the central companionway. In midstair he opened a door, went along the upper gangways, and arrived at the wheelhouse, which, as you know, stands at one end of the platform.
Of course if it had gotten stuck, all ships have bridges and if that didn't boat well and the passengers became " starboard" of waiting and they wanted to " galeave" and there was no gangway to depart from the sides.