The boat runs on the ground, not in the sea. It seems the creator was so drunk that he could not see whether he was making a boat or a car.

Our cute mailman Apollo will deliver a Barrel boat key into your Collections in all servers. You can recall the boat using the key whenever you want. You cannot recall two of them at the same time. The item will not be lost even if you delete your character. It might take more than 5 mins to receive the item, depending on the Steam server status.