07/07/2024
Wow! Different times
GERMAN WWII TYPE SMA SUBMARINE-LAUNCHED SEA MINE
The waters off our coast were battle zones during both of the World Wars. During World War II, specialized German Type VII-D and Type X-B submarines deployed SMA anti-shipping mines outside Allied harbors in the British Isles, Mediterranean, the U.S. East Coast, and in the Caribbean.
The mines were carried in vertical shafts and released through the bottom of the hull to settle on the seabed. Each mine was attached by a long cable to an anchor mechanism. A preset timer system released the mine after the submarine was clear, allowing it to rise to a predetermined depth. If a ship passed too closely, the steel of its hull could trigger the mine's magnetic detonator, releasing a blast of over 770 lbs. of explosive.
Other types of U-Boats carried similar, smaller type TMB mines in their torpedo shafts. In June 1942, 15 such mines were placed near the mouth of the Chesapeake Bay off the coast of southern Virginia by the German Type VIIC U-Boat U-701, captained by Horst Degen.
The mines sank or damaged five Allied ships, including the HMT Kingston Ceylonite, killing 18. Three of the sailors who washed ashore at Sand Bridge are interred in Oak Grove Cemetery near Pungo Ferry Landing. On This Day, July 7, 1942, that submarine was sunk off Cape Hatteras, North Carolina by a US Army Lockheed Hudson patrol bomber.
ℹ️ Courtesy of the Military Aviation Museum