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:
US Navy OH Restoration is in work on this th century cast iron swivel gun recovered from the Penobscot river near Bangor Maine by the Naval Historical Center NHC Underwater Archaeology Branch. en Washington Navy Yard Jun Restoration is in work on this th century cast iron swivel gun recovered from the Penobscot river near Bangor