No specific purpose really, but you may as well flirt with the good CAPTAIN for a bit. Hopefully you're not too rusty....
JET: Why, hello there, sailor.
MANBREATH: Hello there, yourself, beautiful. Is it that obvious that I'm a sailor?
JET: Is it that obvious that I'm beautiful?
MANBREATH: First thing that struck me, actually.
JET: That's not the last thing that'll strike you if you're not careful.
MANBREATH: Oh? Are we talking you or lightning? 'Cause I've been struck by lightning once, and it doesn't strike the same place twice.
JET: But I'm not lightning. I'm thunder. Jill Thunderson, to be exact.
MANBREATH: I'm Manbreath Threeplank, mighty pirate.
JET: Mighty handsome pirate.
MANBREATH: Mighty kind, ma'am. Mighty kind.
OK, well, that's a good flirt. (Also, you notice that he has a small GOLD KEY hanging on a NECKLACE.) Are we going anywhere with this flirting or do we let him go?