Pre-WWII - 1930s, England: Navy Ships in English Channel or At Sea

Pre-WWII - 1930s, England: Navy Ships in English Channel or At Sea Probably British navy Flush-deck aka four-stack cruiser or destroyer (similar to USA Wickes-class or Clemson-class) moving slowly in harbor w/ men on deck. No number & row of portholes near water line & longer row near deck. 01:01:18 Intertitle (brief): How Great Britain Guards Her Coast - English destroyers lay depth-bomb charges in the Channel... 01:01:19 3-stack naval ship moving at speed; MS officers on board w/ binoculars. Putting out much smoke from stacks (smoke screen?). MCU firing mines from side of ship; exploding behind. MCU sailor rolling mine off side & exploding. GOOD. 01:02:26 View back to line of larger ships, battleships underway. 01:02:33 Front view back toward submarine slowly beginning dive. NOTE: shot ends with deck just below water. Ca 1920s unknown naval war ships.