Not that it was ever lacking, but Severus really has Harry's attention now.

"What have you seen?" Harry's been slowly forming his own theories about what this ship can do to people and how it goes above and beyond what they can do to each other. He's not too concerned about Remus' monthly transformations - in the past, he'd been reassured that the on-board wolves won't let him harm anyone.

...and threatened that he'd better not ask for further details.