“Merkator-Netz” (Mercator Grid), and measures a VERY NICE 25″ x 28″ in size! This was originally issued to U-1108! This map/chart allowed the U-Boat Crew to properly calculate their direction. U-1108 was a Type VIIC/41 submarine that was laid down at. Commissioned on November 18, 1944 she was commanded by. Endered on May 9, 1945… (read more)