Ship, Raft or Barge (poled or towed)* -- 1/2 mile per hour, 5 miles per day.
* Rafts barges and keelboats are used on lakes and rivers. If going downstream, ass the speed of the current (typically 3 mph) to the speed of the vehicle. In addition to 10 hours of being rowed, the vehicle can also float as additional 14 hours, if someone can guide it, so add an additional 42 miles to the daily distance traveled. These vehicles can't be rowed against any significant current, but they can be pulled upstream by draft animals on the shore.