COPENHAGEN, Denmark — Peter Madsen, a self-taught engineer, once used an unconventional pickup line, asking women if they wanted to see his submarine. His eccentric passion led him to build the UC3 Nautilus in 2008, a feat that made headlines as the world’s largest amateur submarine at the time. Despite being married, Madsen often found himself entwined in the nightlife of BDSM clubs and private fetish gatherings, seeking connections he described as a compelling network of “crazy ladies,” as detailed in Matthew Gavin Frank’s upcoming book, “Submersed: Wonder, Obsession, and Murder in the World of Amateur Submarines.”
Madsen’s obsession took a dark turn on August 11, 2017, when he invited Swedish journalist Kim Wall aboard his submarine for a brief excursion in Køge Bay. The 30-year-old reporter vanished, and her dismembered remains washed ashore weeks later. Madsen faced grave accusations, including torturing and murdering Wall, with disturbing details emerging during court proceedings. The case shocked many, as Madsen had no prior record of violence, raising questions about the intersection of obsession and darker human tendencies.
The fascination with submarine construction has drawn a unique crowd, often described as an “eccentric micro-community” of enthusiasts who gather annually in Muskegon, Michigan, for the PSUBS convention. Members, predominantly white men, range in age from their 20s to 70s and share a distrust of governmental oversight. They find in deep-sea exploration not just a hobby but an escape from societal norms, according to Frank, who suggests their underwater pursuits signify a retreat from a world they deem depleted.
Many involved in this niche community are self-taught inventors, inspired by a DIY culture. One such innovator, Hank Pronk, built the Elementary 3000, currently recognized as the deepest-diving homemade submarine worldwide. Through online tutorials and videos, he learned submarine engineering, showcasing how technology helps enthusiasts break through traditional educational barriers.
While most members of this community are men, Shanee Stopnitzky stands out. After leaving a Ph.D. program in marine biology, she dedicated herself to constructing experimental submarines, including a vessel whimsically named “Fangtooth.” Despite the unconventional nature of her pursuits, Stopnitzky humorously noted the practicalities involved in acquiring submarines on platforms like Craigslist, often hinting at the need for quick decisions from spouses.
In light of the troubling events surrounding Madsen, experts have speculated that those obsessed with underwater exploration may exhibit unusual psychological traits. Dr. Ernest Campbell, a diving medicine specialist, points out that exposure to high-pressure environments often alters individuals’ brain chemistry. This change can induce a range of psychological effects resembling intoxication, potentially leading to overconfidence or irrational behavior.
Dr. David Sawatzky, another expert in diving medicine, emphasized that the changes in perception and mood can be profound, echoing the distorted realities that might exist within the minds of those who operate submarines. Matthew Gavin Frank further explores these notions, suggesting that the desire to escape into underwater realms might connect with deeper issues for some enthusiasts, possibly leading to harmful actions when confronted with perceived threats.
Madsen’s erratic behavior during his trial, characterized by bizarre comments about his interactions with women aboard the Nautilus, drew scrutiny. He made alarming comparisons to pop culture and asserted an unsettling connection with his submarine. Throughout the proceedings, he maintained a posture of denial, offering conflicting accounts about Wall’s death while refusing to admit to murder.
Now serving a life sentence in Herstedvester Prison, Madsen remains fixated on building and escape. His ongoing attempts to fashion tools for potential breakout have raised alarms among prison officials, notably following a foiled jailbreak in which he unveiled a makeshift explosives belt. Madsen’s story serves as a cautionary tale about the thin line between passion and peril in the realm of unconventional hobbies and the individuals they attract.