Keywords: US Navy 030626-O-9999H-001 Restoration is in work on this 18th century cast iron swivel gun recovered from the Penobscot river near Bangor, Maine, by the Naval Historical Center (NHC) Underwater Archaeology Branch.jpg en Washington Navy Yard D C Jun 26 2003 -- Restoration is in work on this 18th century cast iron swivel gun recovered from the Penobscot river near Bangor Maine by the Naval Historical Center NHC Underwater Archaeology Branch The gun is believed to be a relic from the Battle of Penobscot a little known Revolutionary War military engagement Like most swivel guns manufactured during this time it resembles a miniaturized version of a larger cannon and features a largely intact wrought-iron yoke and swivel assembly The gun can pivot in two planes and functioned as an anti-personnel weapon due to its placement on a vessel s gunwell Photo by James Hunter RELEASED 2003-06-26 030626-O-9999H-001 Navy http //www navy mil/view_image asp id 8266 U S Navy photo PD-USGov-Military-Navy Naval History and Heritage Command Swivel guns |