I was going to utilize the Natter as my recommendation for the craziest weapon structure yet it has just been picked twice.
Along these lines, I will designate the V3 weapon. This was a huge gun manufactured underground intended to fling immensely substantial shells at England. It was planned so that poles worked at an edge to the primary barrel would be terminated with high explosives at the right time to drive the shot quicker and further. It depended on an old hypothesis from the 1850s sent by the creator of the cruiser.