The spar torpedo is made of a bomb placed at the end of a long pole called a spar, hence the name and attached to a boat. The weapon is used by running the end of the spar torpedo into the enemy's ship. Spar torpedoes were often equipped with a barbed spear at the end, so it would stick to wooden hulls. A fuse could then be used to detonate it. The spar torpedo was invented in 1864 during the American Civil War by E. C. Singer. It is important because it helped in big battles on water.