Ship's side (7)
I believe the answer is:
bulwark
(Other definitions for bulwark that I've seen before include "Fortification - side of ship above deck" , "defence" , "Defensive wall" , "Buttress" , "Rampart" .)
I believe the answer is:
bulwark
(Other definitions for bulwark that I've seen before include "Fortification - side of ship above deck" , "defence" , "Defensive wall" , "Buttress" , "Rampart" .)