0 a structure on top of a submarine (= a ship that can travel underwater) or, in the past, a military ship, from which the ship can be controlled and that contains a periscope (= a device for seeing what is above you): --
The forward conning tower had 150mm in thick sides and a 30mm in thick roof.
The circular turrets were protected by armor thick and the walls of the ship's oval conning tower were also 4.5 inches thick.
The conning tower had 6 in thick sides and a 2.25 in thick roof.
One officer escaped from the flooded conning tower, and was rescued with the others.
The conning tower sides were 400mm 1 thick with a 250-mm roof.
Armour plate was also fitted to the turrets (up to thick) and the conning tower (thick).
In many early classes of submarines (see history), the control room, or conn, was located inside this tower, which was known as the conning tower.
His last view of his boat was of water pouring down the conning tower hatch as she went under.
