Thim scuba diving for space. Human spaceflight and exploration. European Space Agency (ESA), 30. Mai 2012, abgerufen am 3. Mai 2017 (englisch): „All ESA astronauts are trained as Advanced Open Water scuba divers and certified to the standards of the Professional Association of Diving Instructors, better known as PADI. ESA’s astronaut training centre in Cologne, Germany decided to train astronauts that have not yet been assigned a mission to the level of PADI Rescue Diver, which will expand their diving expertise. [...] This Rescue Diver Course builds confidence, as it makes divers consider the safety of others, preventing problems and managing emergencies. Last week, Tim started rescue diving training tailored to an astronaut’s needs. A normal course takes around three days to complete, but Tim has a two-week intensive schedule. “
Worldwide Corporate Statistics 2013. (PDF; 232 kB) Data for 2007-2012. PADI, Februar 2013, archiviert vom Original am 2. November 2013; abgerufen am 1. November 2013 (englisch).
Worldwide Corporate Statistics 2013. (PDF; 232 kB) Data for 2007-2012. PADI, Februar 2013, archiviert vom Original am 2. November 2013; abgerufen am 1. November 2013 (englisch).
