on the upper edge of each side
gunwales located
The gunwales is the top edge of the side of a boat.
on the top of the sides
A "gunwale" is the upper edge of the side of a boat (any side). The name derives form the time when cannon were mounted on boats and the "gunwales" were where these cannon were mounted.
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sitting on the gunwalessitting on the gunwales
On the top of the sides
The sides of a ship are the hull. The top of the hull are the gunwales (pronounced gunnels). A ship could be loaded to the gunwales (low in the water).
The gunwales, the anchors, the name, and the Plimsoll line.
The gunwales is the top edge of the side of a boat.
The upper edge of the planking of the side of a boat or ship.
The gunwales ("gunnels") are the upper side walls of a ship or boat, or the top rail on a canoe, or a raised walking deck (side deck) on some types of boats. They are named for the strengthened part of a ship where cannons were mounted.