Systems, methods, and apparatus for permitting evacuation of an aircraft following a water landing are disclosed. In one or more embodiments, the disclosed method involves deploying, an evacuation unit, from inside a storage housing located proximate a door of the aircraft. In one or more embodiments, the evacuation unit comprises at least one step and a wave fence. In at least one embodiment, when the evacuation unit is fully deployed, at least a portion of the wave fence is in water-tight contact with at least a portion of a frame of the door such that water flow into the aircraft is prevented and/or inhibited.