German submarine used in World War I and II.
MilitarySubmarineNaval WarfareVehicle
Current best complexity is 6:
U-boat can be discovered in Concepts, categorized under Military, Submarine, Naval Warfare, Vehicle. German submarine used in World War I and II.
It has been discovered by 12 boards and crafted 26 times, first appearing 5 months ago. U-boat can be created from 16 recipes, and goes on to appear as an ingredient in 35 others.
U-boat was first discovered by Jozef's board 5 months ago. The lowest-complexity recipe (6) is held by [Monochrome].
Related concepts worth exploring include Marine, Locomotive, Navy, Submarine, Fleet, Fortress, and 6 more.