Small Watercraft ORS 830.950 Definitions for ORS 830 Text Annotations As used in ORS 830.955 (Prohibition of installation of submersible polystyrene device): (1)“Encapsulated” means a protective covering or physical barrier between the polystyrene device and the water. (2)“Submersible polystyrene device” means any molded or expanded type of polystyrene foam used for flotation. [1991 c.759 §2]