Once known as Hartley18
Join Date: Aug 2007
Location: Melbourne, Australia
Thanked 65 Times in 65 Posts
Rep Power: 9
It sounds to me like some kind of lock-down area that bad guys can't shoot their way into.
Personally, I'm surprised they don't just avoid the area entirely rather than go to the trouble of (what amounts to) rebuilding the bridge superstructure...
"Honestly, I don't know why seamen persist in getting wrecked in some of the outlandish places they do, when they can do it in a nice place like Fiji." -- John Caldwell, "Desperate Voyage"