"Yeah, that's right. Or just further the understanding of the universe, at least. I've got a whole ship full of 'em." Or... he did. He's been trying not to think too much about the personnel he's going to have to replace, lost in the battle against the USS Vengeance.

All right, so it's not as straightforward as he thought. That's fair, though, and he doesn't display any scorn for her not knowing what the hell he's talking about. He just hopes that he remembers enough about the outdated tech to describe it enough to be understood. "It's an old kind of sensor sweep. You'd send a signal out in all directions and if it hit something, the signal would bounce back and that'd tell you there was something there. Sonar's the same thing, just underwater."