I deemed it terrible script writing Marika looked like she hadn't even considered the yacht club members as opposed to the cliched but believable reason of not wanting to drag them into piracy (to bother them, like the Japanese put it). That was certainly the reason I expected to hear when the real crew was isolated and it was revealed she tried to get a temporary replament from the free market instead of from the obvious people closeby.

What comes to replacing the crew eventually, it would make sense to do it gradually, not all at once. That would be the only way to pass on the accumulated experience and traditions plus ensure you don't hire a bunch of hijackers or otherwise mutinous scumbags.

Nevertheless, Chiaki's old man got a pretty nice introduction. The theory why Chiaki is such a straight-laced perfectionist was also confirmed for good, seeing how her dad really looks like an informal ruffian.