Keywords: U-3008 Snorkel.jpg en View atop the conning tower of the U-3008 looking aft showing periscope base and retracted snorkel Taken at the Portsmouth Naval Shipyard Kittery Maine http //www history navy mil USN 1946-08-30 PD-USGov-Military-Navy U-3008 submarine 1944 Submarine periscopes exterior views |