The conning-tower and periscope are placed on the upper deck, as shown.
"I'll stand by you," Captain Purnall roars to the lone figure on the conning-tower.
I waved to Stephan from the side of my conning-tower, and he to me.
There was nothing but the deck, the guns and the conning-tower to be seen.
The conning-tower will be seen below the bridge, in front of the foremast.