The evacuation system designed for use on offshore installations. A key element of the system is a self righting, oval domeshaped capsule manufactured from fire-retardant fiberglass reinforced plastic. While launching, the craft should be battened down with all hatches and doors closed, the engine being started at the embarkation deck level before lowering is commenced. The capsule is equipped with a compressed air bottle system which enables the occupants to breathe normally when in the battened-down condition.