7 places reachable without changing, across 1 terminal . You do not board anything in Kōzushima itself; each one below says how far out it is.
1 place to board, none of them "Kōzushima" itself. The distance is from the centre — an airport an hour out is a different journey from one thirteen kilometres away, and folding that into a flight time is the false claim this site exists to avoid.
sea more than one way
All 7 of them, deduped across every terminal — 7 by sea.
Our records for journeys from Kōzushima were read on 11 August 2026 and describe the network as it ran that week. We hold no month-by-month variation, so this page cannot tell you whether a crossing runs in February.
If you are travelling well outside August 2026, confirm with the operator before you plan around it.