vessel.raft
Rafts and log floats moving timber downriver. Posts that touch vessel.raft. See it in the Atlas ontology.
Atlas #1 · The island's trade
Cargo Only Floats Downhill: The River Trade of a Mountain Island
Every river the island trades on, measured: 92% of the cargo goes downstream, the barge has vanished, and boatmen haul their empty boats back up the rapids.