This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
艃 combines 舟 (boat) with 里, but the historical origin and original meaning are uncertain. It may have been a specific type of boat or a variant character.
A boat 舟 beside a village 里: perhaps a boat used to travel between villages, but its exact meaning is unclear.
For リ, imagine a boat named 'Lee' sailing between villages: Lee -> リ, and the boat 艃 carries the name.
—