I believe SB on any field need to be located in such a way to only shoot out to sea or no closer than the shoreline in order to fulfill their intended goal to shoot at Task groups and or LVT haveing to travel into a town or base from out at sea. SB's that can traverse onto a town or port an shoot directly onto the maproom should be relocated. This sounds like a bug when the map was created the SB was located in an inproper position.