In 1961, after a B-class cargo ship had sunk east of Iceland in the Norwegian Sea due to a recent storm, Urbanshade personnel were sent to survey the area. There, they discovered a previously unknown abyssal trench, measuring at a depth of 76400 studs. Around 67320 studs deep, the water pressure has an immense shift from a typical crushing depth to that of a regular swimming pool. Anything under the 67320 studs depth is called The Let-Vand Zone, while anything above that is simply referred to as the ocean. The Veil of The Let-Vand Zone is the line where the pressure shifts. The veil acts as a natural blockade, requiring Urbanshade submarines to use jet engines boosting up to 2,300,000 studs per hour and easily piercing it.