Sounds like good defense to me, and poor planning (as Larry kinda hinted at) on the part of the attackers.
IMHO, each shore base should have at least 4 SB's, and at least one of them should be sited to cover the town, with the ability to depress and fire into the town as needed. I would gladly take the time to check each map for HTC to see how many needed "adjustments" to meet that criteria. Well, not to add SB's, but to resite at least one to cover the town at each and every base located near the shore.
But that's just my opinion, I spend more time defending bases that attacking. Attackers seem to run in hordes, and I don't like being a part of that.
