Central Operating Compartment of the Submarine S-49

Front:
CENTRAL OPERATING COMPARTMENT OF THE SUBMARINE S-49

Back:
SOUVENIR GREAT LAKES EXPOSITION — CLEVELAND CENTRAL OPERATING COMPARTMENT OF THE SUBMARINE S-49 The Central Operating Compartment of the S-49 has controls for operating the entire boat. This room, with its hundreds of valves and gauges, its electrical switchboard and its many other devices, is one of the marvels of modern science.