You may want to check with two people:

Dr. Robert Browning at [log in to unmask]

and Don Canney at [log in to unmask]

Don and his dad are both coastal defense and fort people. Bob Browning has
an extensive network of Civil War contacts and could probably help you out
(he's also the author of a book on the North Atlantic Blockading Squadron).
Both are really nice guys too.

Amy