Talk:River Tunnel/@comment-32366609-20170706080305/@comment-27516791-20180304004734

Defaultio planned to add boats to access the Tropics, which is why he also added sand islands. A few days after the Tropics biome was in-game, the Dock was added, and then so was the Ferry. Clearly there was some flaw with the boats, and we assume it's because you can access pretty much anywhere from anywhere, which is unsupportive of the game's core mechanics.