The Seongsanpo Port Comprehensive Passenger Terminal in Seogwipo sells tickets for boats to Udo and nearby islands. Boats to Udo depart every 30 minutes and arrive at either Cheonjin Port or Haumokdong Port. At the ticket office, passengers fill out two copies of a boarding declaration for the round trip and show identification to buy a ticket, and the vessels have charging sockets. Rental cars are difficult to take to Udo, so they must be left in the terminal parking lot.