Water
Water is typically considered as one of the basic terrains. A hero can only travel on water covered terrain with a boat. Boats can be can be built in shipyards, created or summoned with the Summon Boat spell or they can be found on Adventure Map. Only one hero at the time may be aboard the boat.
Additionally, heroes can get across water squares with Water Walk and Fly spells, or by wearing Boots of Levitation or Angel Wings. The diffrence is, that only hero in a boat can end their movement on water while crossing the water requires that they end their movement on dry land. It should be noted, that shroud on the water between two squares of dry land does not prevent hero from walking or flying across it and mapping the shrouded area. However, the hero must be able to see both land squares before starting the trip.
Hero on a boat can also visit and pick up objects on water. While sailing on boat the hero can:
- gather Flotsam, which may provide
wood and/or 
gold - gather Sea Chests, which may provide gold or an treasure class artifact
- rescue a Shipwreck Survivor, who will always provide an artifact as a reward
- search Shipwrecks and Derelict Ships to fight guardians for gold and artifacts
- meet up with Mermaids for a luck bonus
- investigate Buoys and get better morale
- visit Sirens, which causes the hero to lose 30% (rounded down) of each stack in hero's army and gain experience equal to the health of the lost troops.
- go through one Whirlpool and end up in another.
- read Ocean bottles.
Almost all adventure map objects that are normally placed on dry land can be also be placed on water square and still function normally. The exceptions are Towns, Subterranean Gates and Monoliths, which can not function if visited with a boat.
Unlike movement on land, the speed of the creatures in the hero's army does not affect movement in a boat.