Crow's Nest

Overview
A Crow's Nest is the topmost platform on the mast of a sail. In order to access it, a grappling hook may be used, or you will need to install s to the platforms below it and finally up to it and then climb onto its platform.

Dictionary definition: crow's nest noun : a partly enclosed platform high on a ship's mast for use as a lookout

Usage
Aside from the obvious scouting advantage of being up high, the game also provides an increased sight-range bonus when standing in the crow's nest. There is an indicator of this subtly added to your distance-to-shore indicator, as you can see below: While the icon displays the spyglass the game gives your pathfinder increased sight range for at least finding flotsam, although there may be other undiscovered bonuses as well.