The holk is a three master from the 15th century used by the Hanseatic League.
There is a simple rig, which could be improved.
Sail cloth is animated, as is the sea, though the propotion of the ship and the waves does not match
Layer 1: Model and Wind
Layer 2: Template objects
Layer 3: Water
Layer 6: Rig
Layer 9: Background sky
Layer 10: Lighs/Camera
Layer 11: Empties
Layer 20: Bone shapes
Developing this model, I did a timelapse, which can be found through the article on Blender Artist: