[Barnacle]

You mean to say that you’ve been aboard this vessel for two and a half years,
and you’re just now asking me what ping means?
Well, I’d love to stay here and explain it, but I have to get up to the conning tower.

By the way... that’s the funny little structure above the deck.

[Gondring]

conning tower.

For a second, I thought you were referring to a minaret, not the structure in a submarine's sail. ;-)