After paying 2 gold coins to the Ferryman, he let you enter the ship. Inside it looked like a hotel, with rooms, living rooms, even a bar. The other passengers were in this same bar.

Mindflayer: "Then I said 'Why didn't you call him an idiot?'"

Sentry: "Haha...good one..."

Streetcleaner: "Not that good."

The other passengers seemed to only be talking to each other.