Torpedo bay of USS Drum, a Gato-class submarine which served the US Navy in WWII.
https://diqn32j8nouaz.cloudfront.net...orpedo_bay.jpg
Previously:
https://www.homemadetools.net/forum/...228#post153978
https://www.homemadetools.net/forum/...204#post130538
https://www.homemadetools.net/forum/...830#post156242
