The Lancaster Bomber was an amazingly big and strong 4 engine bomber design and used very effectively, by the British to bomb Germany into submission by night. By the wars end, the Lancaster was dropping the biggest bombs of the war, the bomb was called the "Earthquaker" because of it's massive weight and damage. It was a mammoth bomb weighing 22,000 Lbs. It was these bombs that also sunk the mighty battleship Tirptz.