Function: Rigid inflatable boats are deep-V glass-reinforced plastic hulls to which a multicompartment buoyancy tube is attached. They are powered by either a gasoline outboard motor or an inboard/outboard diesel engine. The RI can be easily deployed from a cutter with a four-point bridle used for davit lifting and lowering. The RI is a versatile craft. Its portability and ruggedness allow it to be used across many Coast Guard mission areas.