Fort Sandoské was a French military fort, built about 1750. The fort was located on the (now) Marblehead Peninsula on the northern side of Sandusky Bay in Ohio. It was built at a site formerly occupied about 1745 by a trading-post run by mostly Pennsylvanian ("English") fur-traders; but the site was "usurped by the French" about 1749. This specific site was, however, never a British military outpost, as some historians assert (apparently having confused the "English" fur-traders with the British military. See Fort Sandusky). The French briefly used the fort to secure supply and communication between Fort Niagara and Fort Detroit. Fort Sandoské was known to already be abandoned by 1754, when explorer DeLery visited the area, and sketched the remains of this fort's layout/plan.