A once in a lifetime experience!
Unlike SCUBA-diving, submarine-diving has no effects of pressure change on the body. This means that people who are unfit to dive due to medical reasons are almost always allowed to dive with the submarine. People with ear-problems, cardiac disease, lung problems, and similar conditions are all allowed to dive in the submarine as well. All systems have been certified by Germanischer Lloyd’s, meeting and exceeding the highest international safety standards.