You're Sapphired!

The last voyage of shipping magnate Onabes's bachelorhood is an extravagant affair, with a ship full of beautiful women and first-class objets d'art. Lupin, knowing that Onabes has a villainous past, decides to give him a shock, by disguising himself as a shipwrecked woman(?!), and thus getting aboard his ship...

Synopsis excerpt via Kitsu.