Soren .... there's only up to 4 people on the airship/submarine, excluding the pilot and Rue.
Meaning there can only be 1 person actually looking at him

Anyway, the only one unaccounted to go on an airship is Charlotte.
So it's either Charlotte on the airship/submarine with Duncan, Kein and Eika or she's with Xerox, Syrus, Rue and Jericho