Sailors in the North Atlantic fire guns at icebergs to break them up.
Full title reads: "'ware icebergs! Exceptionally warm weather releases giant 'growlers' from Arctic Circle into the Atlantic - full early this year. Patrols are protecting shipping lanes."
Shots of from ship of large icebergs floating in the Atlantic Ocean.
Shots of guns on ships being fired at icebergs and explosions on their surface - presumably the sailors are trying to break them up.
More shots of icebergs.