This page is dedicated to the development of the Dräger
Tauchretter and the English DSEA (Davis Submarine Escape Apparatus). The
reason this page was made is information I received from Joe. Joe is a
collector of pre- and postwar Tauchretters and even owns some WWII models.
In what way are Tauchretter different from normal oxygen rebreathers? Well
in fact they are not. Only the intended use is different since they were
used by submarine crews to save there life when they need to escape there
submarine. That brings us to the point of Hyperoxia. Most of my readers are
aware that breathing oxygen under high pressure can cause Hyperoxia.
Commonly a limit of 6 meters depth is accepted as a safe depth when
breathing oxygen. Would that be very useful when escaping a submarine?
When the unfortunate crew member has to leave his sub at 30 meters, he would
be exposed to 4 bar oxygen pressure. The big difference in diving from the
surface and ascending to such a depth, and leaving a submarine is the fact
that the escape starts in the atmospheric hull of the submarine. The escape
can be started by adding nitrogen (air) in the mix and in this way start
with a Nitrox mix instead of pure oxygen. Dräger and Siebe Gorman performed
many tests and were able to produce Tauchretters and escape units
capable of saving crews from depth up to 100 meter!
Later during the 60's the escape sets were equipped with
Nitrox and oxygen to make escaping more safe! Strange enough the concept was
not new since the 1914 DM2 unit was equipped with Nitrox and oxygen in
separate bottles already!
This page shows photos of German and English training and
tests performed by these brave men, and some pictures of escape units
through made during many years.
If you are searching for detailed information about Dräger
Tauchretters I would recommend you to visit
Tauchretter pages. His website is a fantastic source for extremely
detailed information about these units. He also has worth full tips how to
distinguish true and fake escape sets.