USS Inca was a ferryboat constructed for the U.S. Navy in 1911.

She served the Navy at major American naval facilities located at Newport, Rhode Island; Norfolk, Virginia; and at Philadelphia, Pennsylvania.

She conducted her ferrying services through World War I and then continued her work until the late 1930s, when she was finally struck by the Navy.

She provided ferry service for Naval Training Station, Newport, Rhode Island, until about 1920, when she was assigned to the Norfolk, Virginia, area.

The ferry remained in service there until the thirties, when she moved to Philadelphia, Pennsylvania.