According to the Guinness World Records, the deepest sunken ship that has been wreck and identified is a German blockade runner from World War II. The ship was called the SS Rio Grande. In early the ship was sunk by American ships in the South Atlantic Ocean in January 1944. The wreck rested 3.57 miles below the ocean.
The wreck ship was discovered on November 28, 1996 by the company responsible for finding it, the Blue Water Recoveries using the sonar technology and remotely operated vehicles. The depth of the wreck was 18,900 feet (3.57 miles).