The Bob Semple tank was created by New Zealand Minister of Works Bob Semple at the height of World War II. Notorious for its multiple design flaws, the Bob Semple tank was essentially a tractor covered in corrugated iron, with a few machine guns attached. Because of its immense weight (up to 25 tons), the Bob Semple tank could only travel at a crawl, which made it essentially useless in tactical manoeuvres or retreating. It also had no main cannon, and the vibrations made aiming the machine guns extremely difficult. The tanks were rejected for use by the New Zealand Army, and restored back to their original use as tractors.
