This resulted in larger, high-freeboard ironclad frigates or battleships the British dubbed "centre battery ships" and the French "casemate" or "barbette" (if the citadel was circularly shaped) ships, which were oceangoing, unlike the American originals (excepting the Confederacy's , the only Confederate high-freeboard and oceangoing barbette/casemate ironclad, and the Union's rather unusual low-freeboard, but equally oceangoing, casemate ironclad ).
This resulted in larger, high-freeboard ironclad warships that the British called "centre battery ships" and the French referred to as "casemate" or "barbette" (if the citadel was circularly shaped) ships, which were seaworthy, unlike the American originals (except for the Confederacy's , the only Confederate high-freeboard and oceangoing barbette/casemate ironclad, and the Union's rather unusual low-freeboard, but equally seaworthy, casemate ironclad ).