National Aquatic Service, Inc. (NAS) has been serving the needs of swimmers, snorkelers, freedivers, and scuba divers in Central New York since 1959. We offer Scuba instruction and certification from beginner to instructor from SSI, SDI, and TDI. NAS offers the area's only full service Scuba repair facility. NAS's retail facility offers the best of Scuba, Snorkeling, Freedive, Swim, and Triathlon from leading brands like Scubapro, Speedo, Oceanic, TYR Sports, Aquasphere, Neosport, Atomic Aquatics, Omer, Genesis, and many more.