Amerika: Projekt Ursel Type XXI U-boat

A feat of German engineering, the Type XXI had improved speed and large capacity batteries, allowing it to travel farther and longer without the need to surface. These characteristics made it the perfect platform for Projekt Ursel, a plan to add rockets to the sub and included a guidance system for targeting. With tested accuracy after the Atlantic Campaign, these will terrorize the East Coast like never before in Amerika. -description from publisher