This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Submarine snorkel the first used by the Swedish Navy used on Neptun and later Nacken Marinmuseum Karlskrona Sweden DSC. en Exhibit in the Marinmuseum Karlskrona Sweden Photography was permitted in the museum without restriction own Daderot other versions cczero Equipment in Marinmuseum Uploaded with Submarine snorkels