It is an irregular hexagon, built of Stone upon a Small Rock standing at the west Entrance of the Bay, and is surrounded on all Sides by the Sea.

It is mounted with 14 or 15 guns, which are placed so as to play upon Shipping going in and out of the Harbour.

There is only one way to go into it, which is by Steps Leading up to a Sally Port on the North-West side.
Opposite this is the Fort of Santa Cruze, built upon a low rocky point that forms the East Entrance of the Bay.

It hath the Appearance of a Regular Fortification of Stone Work built upon the Slope of the Rock, on which account there are in some places 2 Tier of Guns.

It hath no Ditch but on the Land side, where it is cut out of the Rock; in every other part the Sea washes up to its Walls.