 The name originates from the Dutch "sloep", which is related to the Old English "slūpan", to glide.In naval terminology, "sloop-of-war" refers to the purpose of the craft, rather than to the specific size or sail-plan, and thus a sloop should not be confused with a sloop-of-war.After the cat rig which has only a single sail, the Bermuda rig is the simplest sailing rig configurations.