Horse Buff Water and rafts

Horses swim. Ride into deep water and the horse stays at the surface and keeps moving instead of sinking under you, so a river is something you cross rather than something you go around.

A horse can also stand on a raft. Vanilla refuses this outright - it treats a horse as too large a passenger for any boat - so getting a mount across a large body of water normally means leaving it behind. Here the horse simply steps on and rides along.