OOCly, because it'll be interesting.
ICly, because Yaichiro sees it as an opportunity to put the girl out of her comfort zone. She's an NCO, likely to be in a position of field command should the XO not be present. He wants to see how she handle herself in a situation like this that relies on other skills. It's not about success or failure though. He doesn't expect her to succeed, and failure has no real cost in his eyes. If she did manage it, he'd be pleasantly surprised. She asked for something to do, and she received it, even if a form other than that which she intended.