The South had very limited manufacturing abilities but much more imagination than the North. Even with small resources the Confederates came up with many very successful torpedoes, the first submarine to sink a warship, the Coal Torpedo that sank the Sultana and was copied by many nations in later wars, polygonal and segmented shells, simplier manufacturing of projectiles to not wear out their manufacturing equipment and land mines. The Brooke guns were the strongest made on either side. The most popular US projectile, the Parrott was really a Read, patented by a Southerner before the war.
