Old Saybrook Historical Society

Historical marker location:

350 Main Street, Old Saybrook, Connecticut

( Marker is at the intersection of Main Street (Connecticut Route 154) and Sand Creek Drive, on the left when traveling south 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.