If he's really into this silence field thing, she should start charging him for it to make a little bit of coin on the side.

"All right, we go about this the stealthy way. I can go invisible again. I should have enough time to run out close enough to see the name and at least get to cover to make my way back when I appear again. If the name's visible, I mean." There's no telling if the sea waves have stripped the paint off by now. "But beyond that, I won't have enough time to eavesdrop on them and get out unseen. What do you think?"