query: When were submarines introduced in warfare?
passage: Submarine warfare
The age of submarine warfare began during the American Civil War. The 1860s was a time of many turning points in terms of how naval warfare was fought. Many new types of warships were being developed for use in the United States and Confederate States Navies. Submarine watercraft were among the newly created vessels. The first sinking of an enemy ship by a submarine occurred on 17 February 1864, when the Confederate submarine H. L. Hunley, a privateer sank the sloop USS<i>Housatonic in Charleston Harbor, South Carolina. Shortly afterward, however, H. L. Hunley sank, with the loss of her entire crew of eight.
passage: Women in the military
In 1985 the Royal Norwegian Navy became the first navy in the world to permit female personnel to serve in submarines. The first female submarine commander was Captain Solveig Krey aboard the first Kobben class submarine on 11 September 1995. The Danish Navy allowed women on submarines in 1988, the Swedish Navy in 1989, followed by the Royal Australian Navy in 1998, Canada in 2000 and Spain.