Pask film no. 5.

Intertitle: Unconscious floating posture. The captions note that the subject is anaesthetised and given a muscle relaxant. Three cameras were used (two above water and one below). These shots were taken in still water at 30 degrees centigrade. The first life jacket tested is RNZN life jacket, then a modified RCAF life waistcoat (any serviceman wearing this model would have quite clearly drowned as the subject's face is fully submerged even in still water). Next the BOT Kapok and then a full buoyancy suit. The subject remains face down in the water proving the latter has no self-righting properties. RN Life belt displays similar properties. Underwater shots of the subject being hoisted out of the pool.