I got you so dont get clever girly. "Hmmm what is it?" I said.

The vent Kathleen is attempting to enter is overhead and leads across the sub connecting to the bilge motors by the engineering room. It is usually half full with water and it is possible to crawl through to an exit by the engine room. However opening this vent is likely to dump a large amount of water currently in the tube into her room.

Dinah on the other hand is not as lucky as she will not have an intercom in her room but with the alarm now turned off by Captain Zolf, her shouts and thumps are audible outside her room.