The little Oinoussai III (€5 one way, one hour, daily) leaves from Chios in the afternoon and returns from Inousses the next morning, warranting overnight stays. Purchase tickets onboard or from Sunrise Tours in Chios Town. There are weekend summertime excursions (€20) available.
Daily water taxis travel to/from Langada (20 minutes), 15km north of Chios Town. The one-way fare is €65, split among up to eight passengers.