Dock/ko

Docks are water based buildings that act like bridges, they were added in update v0.40 to The Forest.

Gameplay
Docks are buildings that can only be placed on water or very close to water. They can be used as bridges though they are quite costly. It is possible for the player to anchor a House Boat to docks (check gallery). All other Boats can not be moored at this stage, this includes Small Raft and Large Raft. It can be quite difficult to get the House Boat into position to do this. When it is in the correct position, to anchor the boat, aim at one of the pillars on the dock, a letter  should an appear. Hold down  for approximately 2–3 seconds to anchor the House Boat. The boat will no longer be able to be moved until the player removes the anchor.

If a dock is destroyed while a House Boat is attached, it does not destroy the House Boat. It can still be used.

Building
The length determines the cost

The House Boat is currently the only boat that can be moored to the dock:

Trivia

 * 'Moored' is possibly the more accurate term instead of 'anchor'