When refloated in the 1930s the turrets remained on the seabed. Upside down, with all the exterior parts burried in the mud. What remains visible to the diver were formerly the interior mechanisms, which extended right down into the bowels of the ship.

The row of metal balls in the bottom left of the picture are giant ball bearings. Which fitted between the bottom of the turret & the deck of the ship. Whilst the large gear was probably part of the tracking or elevation mechanism for the guns.