Arne Zetterström

Arne Zetterström (5 June 1917 – 7 August 1945^[1]) is best known for his research with the breathing mixture hydrox for the Swedish Navy.^[2]

Arne Zetterström
Arne Zetterström in diving dress on board HSwMS Belos, shortly before his fatal diving accident on 7 August 1945
Born	(1917-06-05)June 5, 1917 Malmö, Sweden
Died	August 7, 1945(1945-08-07) (aged 28) Äppelviken, Stockholm, Sweden
Nationality	Swedish
Occupation(s)	Engineer, diver
Known for	Pioneering the use of hydrox for diving

Zetterström first described the use of hydrogen as a breathing gas in 1943. From 1943 to 1944, a total of six ocean dives were made utilizing this mixture with the deepest to 160 metres (96% hydrogen and 4% oxygen).^[2]

On 7 August 1945 Zetterström experienced technical problems diving from HSwMS Belos. His support divers misread his signals and this was followed by a rapid ascent that resulted in fatal decompression sickness and hypoxia.^[2]