Historical Marker
Millstone School House
Historical marker location:
1353 Main Street, Hillsborough, Millstone, New Jersey
( Marker is on Millstone River Road (County Route 533), on the right when traveling north.)
The first recorded instance of a submarine attack on a ship occurred off the coast of New Jersey during the American Civil War. On February 17, 1864, the Confederate submarine CSS Hunley attacked and sank the Union ship USS Housatonic near Charleston, South Carolina, while on its way from New Jersey.