A heavily armoured cylinder extension downward from a gun turret to the lowest armoured deck to provide protection to projectile and powder handling crews.
Izixokomezelelo zesilinda ezixhotyiswe kakhulu ezisuka ngaphantsi kwiinkanunu ukuya kowona mgangatho uxhotyiswe kancinci ebonelela ngokhuselo kubasebenzi benqanawe.