Civil War ironclad enthralls Navy divers, archaeologists in Savannah

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NEW: U.S. Navy brings up fourth cannon

Civil War ironclad must be moved so the shipping channel can be deepened

Divers have brought up 1,500 artifacts so far

CNN  — 

The wreckage of a Civil War vessel that is being removed piece by piece near Savannah’s famous River Street continues to impress – and even surprise – divers and archaeologists.

Officials initially thought they might recover five to 10 artillery rounds belonging to the CSS Georgia, which was scuttled by its Confederate crew right before the city fell to Union forces in December 1864.

But they’ve found more nearly everywhere they turn, with about 145 shells and projectiles recovered, and counting.

But the biggest surprise may have come Tuesday afternoon. U.S. Navy divers, who had already brought up two cannons, were bringing up a third, believing from archaeological research that it was an 8-inch cannon.

“The second it broke out of the water, I looked at Parker (Brooks, a graduate student), and said, ‘It’s a Dahlgren,’” said Jim Jobling, a project manager with Texas A&M University’s Conservation Research Laboratory.

Because the 9-inch Dahlgren weighs about 1,500 pounds more than the 8-inch gun, the divers put it back on the Savannah River bottom, with plans to rig it again for the lift to a waiting barge. “These guys are extremely professional,” said Jobling.

The Navy team successfully raised the gun at sunset Tuesday.

Jobling, who is working with the U.S. Army Corps of Engineers, said even with 1,500 artifacts found thus far, officials “have only scratched the surface.”

The $15 million removal of the CSS Georgia is necessary for a state and federal harbor deepening project, which will see the channel go from 42 feet to a uniform 47 feet so massive cargo container ships can use the port without relying on the tide.

The large number of artillery shells and the discovery of the Dahlgren, a large defensive weapon that had a crew of 16 and a powder monkey (a boy who carried gunpowder to cannons), have added to the mystique of the CSS Georgia.

Researchers have no blueprints or proven photos of the ironclad – and they aren’t sure how it was put together or even its size. These are some of the mysteries they are hoping to solve in the months and years ahead.

First time above the surface in 150 years

Over the past six months, divers working with the Army Corps of Engineers brought up hundreds of items by hand. Then the Navy was brought in to help with heavy lifting.

Virginia-based Explosive Ordnance Disposal Group Two has been in the water for nearly a month, tasked with salvaging the cannons, artillery rounds, the propeller, engine components and the casemate, which are the sloped, armor-coated structures that housed the CSS Georgia’s guns. It can be dangerous duty.

They expect to complete work by September 11.

The ironclad was significantly damaged by dredges clearing the channel, most recently in the early 1980s.

They left behind dredge marks amid the remains of the CSS Georgia, which rests on a slope.

“They are like grooves,” said Russell Wicke, a spokesman for the Savannah district of the U.S. Army Corps of Engineers.

Wicke and Lt. Liza Dougherty, public affairs officer for the U.S. Navy group, said Navy divers kept finding artillery rounds that had rolled into the deep grooves.

“The divers would come down, pull up a cannonball and there would be two beneath it,” said Dougherty. The Navy is posting updates on its operations on a Facebook page.

The CSS Georgia didn’t have enough power to maneuver and effectively trade artillery rounds with any enemy vessels that might approach from the Atlantic Ocean. Instead, the vessel became a stationary floating battery, bristling with artillery pieces. The wreckage rests a couple of miles east of downtown.

The Confederate ship may have had as many as 10 guns, but a few may have been removed before the city fell to forces under Union Maj. Gen. William T. Sherman.

Two were recovered years ago and are at Old Fort Jackson, a fortification very near the CSS Georgia wreck site.

The first of four remaining cannon, a small gun, was raised last week.

“It fires a shell that is about 3 inches in diameter,” said Jobling. “It could have been used as case shot, or shrapnel, on ongoing soldiers or sailors in rowboats.”

A second gun brought up Tuesday morning is a larger Brooke rifle, similar to one at Old Fort Jackson.

“It’s a wonderful piece of the history for the Navy guys to know that once a week (the CSS Georgia crew) did their practice rounds (with the gu