Unsinkable swimsuits and underwear are tested out by people in the river Thames. London.
C/U pan up three girls in unsinkable swimsuits. M/S crowd watching. C/U as a rope is tied around a girl called Jean, M/S as she jumps into water, rises and floats. M/S Arthur Aveyard getting into unsinkable underwear. M/S crowd. M/S as Arthur jumps off bridge and rises. C/U as he floats. M/S as little girl is thrown into the river in unsinkable suit. M/S crowd watching. C/U girl floating on her back. C/U Vera Baines getting into sack. M/S crowd watching. She is thrown into the river, C/U girl watching. M/S as Vera swims towards the bank. M/S another girl having motor fixed to her. C/U as she walks past camera and gets in the water. She is propelled along by the power unit which streams out behind her. M/S's as a man gets in and swims around, he also has a power unit. M/S girl swimming under power.