They cannot make a submarine themselves, or design it, but when they reach 50 percent, they will reach 50% at everything. In submarine engineering, they will b

They cannot make a submarine themselves, or design it, but when they reach 50 percent, they will reach 50% at everything. In submarine engineering, they will be able to design and construct it in some way like 3d print it, and the submarine will be able to move into the water for some time before it sinks. Yeah, probably for submarines a higher percent should be achieved before they are really useful.