German U-Boat Type XXI: Were a class of German diesel-electric submarines designed during the Second World War. They were the first submarines able to operate primarily submerged rather than spending most of their time as surface ships.
Number of sheets:2 Sheets
Assembled Size:7.48″L x 0.79″W x 1.57″H
(19 x 2.01 x 3.99 cm)