Historical Marker
Stepney Schoolhouse
Historical marker location:
140 Main Street, Monroe, Connecticut
( Marker is at the intersection of Main Street (Connecticut Route 25) and Purdy Hill Road, on the right when traveling north on Main Street.)
The first recorded submarine attack in history occurred in Connecticut during the American Revolution. On September 6, 1776, the American submarine Turtle attempted to attach a bomb to a British ship in New York Harbor, but the mission was ultimately unsuccessful.