As the US switched to full out war production after 12/7/41. Liberty ships and tankers were mass produced. sub assemblies were parceled out and the pieces were assembled on coastal ways. Kaiser yd put one together in 4 1/2 days. You need something fast, come up with a modular design and sub out each module. This will get supply a complex piece of equipment faster than several suppliers building the entire thing and competing for material from the same suppliers. Use a proven design and piece it out. C'mon this isn't rocket surgery you guys