OSC is a premier diving school located in Tokyo and Kanagawa, specializing in snorkeling, skin diving, and scuba diving classes held primarily in indoor pools. Catering to both beginners and experienced divers, OSC offers a range of programs including introductory courses in snorkeling, advanced skin diving techniques, and private lessons tailored to individual needs. Participants can earn various certifications such as skin diver, skin rescue, and open water licenses, equipping them with essential skills for safe underwater exploration.

Apart from classes, OSC organizes exciting tours and events, including dolphin swims and dive trips to beautiful locations like the Izu Islands, ensuring immersive experiences for diving enthusiasts. With a commitment to safety and skill development, OSC's experienced instructors guide students through practically oriented training in facilities such as Yokohama International Pool and Tokyo Aquatics Center. Join OSC to dive into an exhilarating underwater world and discover the joy of diving, whether you're a novice or looking to advance your skills.