The ghost captain is an NPC on the docks of Port Phasmatys. He takes players to Dragontooth Island in a small rowboat located in the south eastern area of the dock, just east of the furnace. As with all ghosts, players must be wearing a ghostspeak amulet obtained from The Restless Ghost quest in order to understand and converse with this NPC.
He will take players to Dragontooth Island for 25 ectotokens, or 10 with the Ring of charos (a) after completing the Ghost Ahoy quest. Alternatively, players can ride for free after paying him a one-off fee of 500 ectotokens.