Dojo Information about our Dojo Seibukan Jujutsu of Salinas is located at the UMASDA, Inc. Dojo at 339 Maple St, Unit C, Salinas CA 93901. As you enter the facility you proceed through the hallway where the school has diplomas for Black Belts hanging. Through the hallway is the restroom, water dispenser, and foyer with refrigerator, microwave, and storage for weapons and training gear. Two changing rooms with led lights. The Shomen This is the view opposite the changing rooms, the “firmer” mat area. From the rear of the 500sq foot mats. The rear “softer” mat area.