Universal floatation child safety seat

This invention relates to seats for infants and children that may be used in motor vehicles, aircraft, and watercraft. In particular, this invention relates to such seats that secure the infant or child for safety and are also adapted to float upright in the water. There is provided a child safety seat and a child safety seat system that are adapted for use in automobiles, watercraft, and/or aircraft. The child safety seat is adapted to float in water such that a child secured in the safety seat is held completely or almost completely above the surface of the water. The child safety seat has a "self-righting" capability such that the seat will turn top-side up in water. The child safety seat has a handle that is integral to the self-righting capability of the child safety seat. In addition, the child safety seat system includes a base that may be used, in particular, in a watercraft and that is adapted to secure the child safety seat such that the child safety seat cannot be shifted horizontally, but can be moved vertically. Alternatively, the base may include a releasable locking assembly, particularly for use in automobiles or aircraft.