From Islapedia

Toyon (#)(1940s?- ), glass-bottom boat added to the fleet at Santa Catalina Island in 1959, was built at a cost of $28,000. Toyon, a diesel-powered launch resembling the Blanche W, was used for trips to the undersea gardens. The boat was a plank built-boat with wide, one-inch thick sections of glass for unobstructed underwater viewing.