In April, a lot of investigations were carried out on Civil War remains in and around Charleston Harbor, SC.
The wreck of the USS Patapsco, a monitor, is located between Fort Sumter and Sullivan Island. They also expect to find blockade-runners buried in the sand on Sullivan's Island in May. These were initially sunk in the water off the island, but over the years, the construction of jetties has filled in the beach.
As already mentioned, the remains of frame torpedoes are being searched.
A search was conducted at the Fort Wagner battleground, made famous in the movie "Glory" where the 54th Massachusetts suffered so many casualties in their ill-fated attack. It has since been washed out to sea with much of the remains under the jetties constructed in the late 1800s.
Lots of magnetic contact has been made in the area, which underwent a 54-day bombardment.
The study is designed to help preserve what's left, but also to protect newer vessels which are getting bigger and drawing more water.
Always Interesting to research Old Stuff. --B-Runner