The nuclear-powered submarine USS Scorpion sinks with 99 men aboard, 400 nautical miles (740 km) southwest of the Azores.

A submarine is a watercraft capable of independent operation underwater. The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and robots, or to medium-sized or smaller vessels. Submarines are referred to as boats rather than ships regardless of their size.

USS Scorpion (SSN-589) was a Skipjack-class nuclear-powered submarine that served in the United States Navy, the sixth vessel and second submarine to carry that name.

The Azores, officially the Autonomous Region of the Azores, is one of the two autonomous regions of Portugal. It is an archipelago composed of nine volcanic islands in the Macaronesia region of the North Atlantic Ocean, about 1,400 km (870 mi) west of Lisbon, about 1,500 km (930 mi) northwest of Morocco, about 1,930 km (1,200 mi) southeast of Newfoundland, Canada, and the same distance southwest of Cork, Ireland.