vessels on 20 December, about four miles south-southeast of Fort Sumter and three miles east-southeast of the light on Morris Island. Leonidas, was originally built as a whaling bark of 231 tons, 320 feet long. It was active in the Pacific Ocean in 1849, captained by Captain Swift of New Bedford, Massachusetts. From 1850 to 1854, it was partially owned, and captained by, Benjamin Smith Clark Jr. It was purchased on 27 October 1861 by the US Navy for $3,050. It sailed from New Bedford in charge of Master John Howland on 20 November,. Exactly one month later, it was intentionally sunk, along with 15 other vessels, about four miles south-southeast of Fort Sumter and three miles east-southeast of the light on Morris Island. Lewis was a sailing ship of 308 tons. It was purchased on 20 October 1861. It ran aground and bilged near Tybee Island in December 1861. She was 101 feet in length, 26 feet 2 inches in breadth, 13 feet 1 inch in depth of hull, with two decks, three masts, a square stern, no galleries and a billet head. Maria Theresa, was a 330-ton ship purchased on 31 October 1861 for $4,000. It was sunk, along with 15 other vessels about four miles south-southeast of Fort Sumter and three miles east-southeast of the light on Morris Island. , a ship purchased at Mystic, Connecticut on 4 November 1861, and sunk on 9 January 1862. , a whaleship of 404 tons, sunk as a breakwater for Union troops invading Tybee Island in December 1861. Peter DeMill, was a 300-ton bark purchased on 9 November 1861 and beached with South America and Cossack on 8 December to serve as a wharf during the landing of Union troops at Tybee Island, Georgia, at the mouth of the Savannah River. , an old 356-ton whaleship purchased on 1 November 1861 at Nantucket, and sunk on 9 January 1862. (ship) or Rebecca Simms or Rebecca Ann, 400 tons. Built as a general trading ship in 1801, she was eventually refitted as a whaleship, and, by 1850, was sailing from New Bedford. Rebecca Sims was acquired by the Navy at Fairhaven, Massachusetts, on 21 October 1861, stripped of all unnecessary equipment, filled with stone, and, under the command of her previous master, James M. Willis, sent south. On 19–20 December, she and 16 other ships were sunk in the main channel