References
Interview 
with Alf Alexandersson
Fire Captain Kungsholmens fire department
in Stockholm, Sweden.
Team leader and professional diver.
Quote;
“With the Mayday-Hansa-Board as a life insurance, I can focus on the rescue operation without anxiety for my own security, wich is a condition/assumption for both be willing to go out in an dangerous situation and being able to perform a good and professional rescue operation”
“Rescue Captain Alf Alexandersson”