If you’re looking for a large liveaboard, or an explorer yacht with a 10,000-nm range, you might want to consider Dot, a converted 154-foot Hong Kong ferry. It has one unique advantage: You don’t have to worry about turning around; it has props at each end, so the traditional notion of bow and stern are irrelevant. Dot was the flagship of the Hong Kong Star Ferry fleet when it was launched in 1988. It was built to handle 200 passengers. Its current owner, a Brit living in Hong Kong, was one of them, and commuted on it every day for…