Maps

Niigata – Sado Island (Ship)

Niigata Port –
Ryotsu Port (Sado Island)

2 hours 30 minutes by car ferry
or 67 minutes by jetfoil

Naoetsu Port (Mainland) –
Ogi Port (Sado Island)

1 hour 40 minutes by fast car ferry

*Details at Sado Kisen website.