Type I Slides and Type II Slide/Rafts both function the same on land allowing descent from the door to the ground. A slide/raft also functions as a life raft in a landing on water and therefore are required to include sea survival specific features such as; an erectable canopy, righting aids and survival packs containing items such as leak stoppers, paddles and flares. Even where only a Type I slide is fitted it has sufficient buoyancy to act as an aid in the event of a water landing.