The SS Hydrus was an American steel-hulled Great Lakes bulk freighter, constructed in 1903 and launched as the R.E. Schuck. She was following the SS James Carruthers heading south on Lake Huron while carrying a load of iron ore when she and the Carruthers were caught in the Great Lakes Storm of 1913.The Hydrus foundered and sank with a crew of twenty-four aboard on 11 November 1913 while heading for the St. Clair River.