Item 21561 - Isaac Sharpless, South Portland, 1943 Item 21561 - Isaac Sharpless, South Portland, 1943 Contributed by Maine Historical Society Item 21561 Zoom 4216px x 3363px - 14.1"w x 11.2"h @ 300dpi | Need a larger size? *Credit line must read: Collections of Maine Historical Society Image Info The Liberty Ship Isaac Sharpless at Pier 1 East at the West Division of the South Portland Shipbuilding Corp. on Feb. 20, 1943. The ship was chartered by the Army Transportation Service and could hold 550 troops. The company built Liberty Ships for the U.S. Maritime Commission during World War II. Show Details