Girl Guides sea branch Sea Rangers learning seamanship on HMS Implacable.
Full title reads: "JILL AFLOAT - Sea Rangers at Portsmouth".
Two grand old ships at sea in Portsmouth. Various shots of the girls crew onboard the training ship HMS 'Implacable' - they are Sea Rangers, a branch of the Girl Guides movement. Girls are seen hoisting a sail, playing with ropes, learning flag signalling etc. Several shots of the girls in dinghies being trained to sail those as well. Girls leaving the ship and getting into boats to take them back to shore.