The submarine, often referred to as a German U-boat, is almost completely intact, and is believed by scientists to contain the bodies of 23 crew members.
Of the 11 German submarine wrecks that are known, it is not yet clear which had been found, but this is currently the best preserved specimen.
At least one extra dive is required in order to determine which submarine it is, but it is believed to be one of three.
Although in good condition, there is still damage to the whole wreckage, especially at the bow.
Authorities said they would not give the exact location of the wreck in the North Sea to deter looters and to prevent damage, but it was found almost 100 feet under the surface.
This is the first time the divers have reached the wreck and provided a description.
Everything about the find indicated that the U-Boat was a UB-II, which is a German vessel used in the First World War.
The use of submarines in World War One to disrupt British trade routes in the English Channel and the North Sea was a key part of Germany’s military tactics.
“Typically, in these submarines, there were a standard 22 crew members and a commander”, says West-Flemish governor Carl Decaluwé.”
Scientists believe that the submarine came into contact with a mine which came into ignition somewhere at the top of the vessel.