1953: Learning To Swim By Radio Delegates at the annual conference of the National Association of Bath Superintendents in Aberdeen heard to-day of experiments in the use of walkie-talkie radio to help swimming instruction. Instead of the instructor shouting across a pool, with the risk of losing his voice at the end of the day, all he now does is to talk softly into the "mike." His instructions are relayed to the pupils by loudspeakers slung over the pool. An advantage of this system is that the instructor can wander all round the pool, watching pupils' mistakes, and still be able to make himself heard.
In Holland The walkie-talkie experiment is being carried out in Holland, and the conference heard about it from a Dutch visitor, Dr J. A. C. Bierenbroodsoot, who delivered a paper on "The Baths Service of the Netherlands". Dr Bierenbroodsoot referred to the tremendous strides the Dutch baths service has made since 1900. At the start of the century bathing had only meagre attention, but at the beginning of World War II there were in the Netherlands approximately 200 bath-houses, 500 open-air swimming pools and forty-two covered pools. This development was due in great measure to the formation of Sportsfondsen Ltd, a savings club, founded on the initiative of Dr Bierenbroodsoot. A disappointing feature, he said, was that many children did not continue to attend swimming pools after obtaining their swimming certificates. The instruction in baths (in every pool four to eight instructors were employed) resulted in a yearly increase of 50,000 certificates of trained swimmers.
Source : Evening Express Thursday September 17th, 1953