Charon's river craft?

• Banks' go-between
• A boat that transports people or vehicles across a body of water and operates on a regular schedule
• Watercraft that can carry cars
• Interisland transport
• It goes from bank to bank
• A way to go by

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ferryboat \Fer"ry*boat`\, n. A vessel for conveying passengers, merchandise, etc., usually across streams, rivers, bays, and other narrow waters.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Describe the fountain, the apple tree, and the ferryboat with sounds and colors that your child will remember. ▪ There is no separating stream; no ferryboat , no ferryman; no Buddhism, no Buddha.

Wiktionary Word definitions in Wiktionary
alt. (context nautical English) A boat used to ferry passengers, vehicles, or goods across open water, especially one that runs to a regular schedule n. (context nautical English) A boat used to ferry passengers, vehicles, or goods across open water, especially ...