Behind a wall of some ruins on a hillside is where you’ll find this skyshard. Ruins are located directly West of Gilbard’s Nook or you can go Southeast from Stonetooth Wayshrine, across the water. You can see the docked ship from the skyshard’s location.
You can see the shining skyshard behind the ruin walls here. You will most likely approach it from above, rather than directly from the docks.
You can see the docked ship in the background.