Not really. Stephen Lee's design of the blockade was tiered. The smallest ships were closest to shore. Another line of ships stood further out to sea. But the biggest, fastest ships stood far off to sea and patrolled the sea lanes to Bermuda and Nassau.The Blockaders stood inshore during the hours of darkness which prevented the runners from steaming parallel to the shore, imagine if they didn't do that for fear of a light ironclad coming out to sink them in the dark, it would only have to happen a few times to make them stand off the shore. The trouble is the Confederates built heavily armoured vessels that had problems getting across the bar, they didn't need to be that well armoured to take on inshore vessels with pop guns you just need a few lightly armed and armoured ships to act as a constant deterrent .