What Became of the Lost Crew: What Happened to the Bodies on the USS Thresher?
The bodies of the 129 men lost aboard the USS Thresher were never recovered. The extreme depth and immense pressure at the site of the submarine’s implosion rendered any potential retrieval operation impossible, leaving the wreckage and its tragic secrets entombed on the ocean floor.
The Disaster and Its Aftermath
The USS Thresher (SSN-593) was a state-of-the-art nuclear-powered submarine, a symbol of American naval power. On April 10, 1963, during deep-diving tests approximately 220 miles east of Cape Cod, Massachusetts, Thresher was lost with all hands. The disaster sent shockwaves through the Navy and the nation, prompting a complete re-evaluation of submarine safety protocols. The immediate focus shifted from body recovery to understanding the cause of the disaster.
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The Implosion and Unforgiving Depths
The Thresher imploded due to a catastrophic failure of a brazed joint in a seawater piping system. This failure flooded the engine room, causing a reactor scram, and the submarine quickly lost propulsion. Unable to arrest its descent, the Thresher exceeded its crush depth (estimated to be around 1,300 feet), and the immense pressure of the ocean at 8,400 feet caused the hull to collapse instantaneously.
The speed of the implosion meant that the entire submarine was crushed within a fraction of a second. The intense pressure would have instantly killed all personnel aboard. The depth at which the Thresher came to rest is a crucial factor in understanding what happened to the bodies on the USS Thresher?.
The Challenges of Recovery
The Navy conducted extensive searches using the bathyscaphe Trieste II and other specialized equipment, locating the wreckage field of the Thresher in the summer of 1963. The wreckage was scattered across a vast area of the ocean floor. Several factors made body recovery impossible:
- Extreme Depth: The immense pressure at 8,400 feet makes manned submersible operations incredibly risky and expensive. Untethered remotely operated vehicles (ROVs) were in their relative infancy at that time.
- Debris Field: The implosion scattered the submarine’s remains across a large area, making the identification and recovery of human remains exceptionally difficult.
- Decomposition: Even if bodies had remained intact (highly improbable given the implosion), the decomposition process at such depths would be significantly accelerated, and the remains would be skeletal in a relatively short period.
- Ethical Considerations: The idea of disrupting what was essentially a maritime grave site raised profound ethical concerns. The Navy ultimately decided against any attempt to recover the bodies.
The Human Cost and Legacy
The loss of the Thresher and its 129 officers, crewmen, and civilian technicians was a devastating blow to the Navy. It led to the establishment of the SUBSAFE program, a rigorous system of quality control and testing designed to prevent similar disasters. While the bodies were never recovered, the memory of those lost on the Thresher continues to inspire a commitment to safety and excellence in the submarine force. The question of what happened to the bodies on the USS Thresher? remains a poignant reminder of the dangers of deep-sea exploration and the sacrifices made by those who serve.
SUBSAFE Program
The SUBSAFE program, implemented after the Thresher disaster, involves:
- Stringent material specifications
- Enhanced welding procedures
- Redundant safety systems
- Comprehensive testing and inspections at every stage of submarine construction and maintenance
The success of the SUBSAFE program is evident in the fact that there hasn’t been a similar loss of a U.S. nuclear submarine since.
Long-Term Environmental Effects
The Thresher‘s nuclear reactor was designed to shut down automatically in the event of a loss of coolant. There have been ongoing monitoring programs to detect any release of radioactivity from the wreckage. To date, no significant environmental impact has been detected, despite the continued degradation of the submarine on the ocean floor.
Comparative Table: Depth and Pressure
| Depth (feet) | Pressure (psi) | Effect |
|---|---|---|
| :———– | :————- | :————————————- |
| 0 | 14.7 | Surface Pressure |
| 33 | 29.4 | Double surface pressure |
| 1,300 | ~600 | Estimated Thresher crush depth |
| 8,400 | ~3,800 | Approximate Thresher wreck depth |
Frequently Asked Questions (FAQs)
What specific physiological effects would the implosion have had on the crew?
The implosion would have been instantaneous and catastrophic. The immense pressure change, occurring in a fraction of a second, would have crushed all living tissue. There would have been no possibility of survival, and the bodies would have been violently dismembered.
Why wasn’t a robotic recovery attempt made, even decades later?
While robotic technology has advanced considerably, the challenges of operating at such depths remain substantial. Moreover, the ethical concerns about disturbing a maritime gravesite have consistently outweighed the perceived benefits of attempting a recovery. The cost and technical difficulty of such an operation are also prohibitively high, especially given the low probability of success in identifying and recovering individual remains.
What legal considerations were involved in the decision not to recover the bodies?
There were no specific laws prohibiting recovery, but the Navy considered the existing maritime laws and customs that treat shipwrecks as gravesites. The absence of a clear legal mandate, combined with the ethical and practical challenges, led to the decision not to disturb the wreck.
How were families of the crew informed about the lack of body recovery?
The Navy held extensive briefings with the families of the Thresher crew, providing them with detailed information about the circumstances of the disaster and the reasons why body recovery was impossible. They were offered counseling and support services to help them cope with their loss.
Has there been any evidence of radiation leakage from the Thresher’s nuclear reactor?
Extensive environmental monitoring has shown no evidence of significant radiation leakage from the Thresher‘s reactor. The reactor was designed to shut down automatically in the event of an emergency, and it appears to have done so successfully. While small amounts of radioactive materials may have leaked over time, they have been diluted by the vastness of the ocean and pose no discernible threat to the environment.
How did the Thresher disaster impact submarine design and safety protocols?
The Thresher disaster led to a major overhaul of submarine design, construction, and maintenance procedures. The SUBSAFE program, established in the wake of the tragedy, implemented stringent quality control measures, redundant safety systems, and comprehensive testing and inspection protocols. These changes have dramatically improved the safety of U.S. submarines.
What type of equipment was used to locate and photograph the wreckage of the Thresher?
The Navy used the bathyscaphe Trieste II and other specialized underwater vehicles equipped with sonar, cameras, and other sensors to locate and photograph the wreckage of the Thresher. These vehicles were crucial in mapping the debris field and gathering information about the cause of the disaster.
What is the current state of the Thresher wreckage on the ocean floor?
The Thresher wreckage continues to degrade on the ocean floor. The intense pressure, corrosive seawater, and biological activity are slowly breaking down the submarine’s remains. The debris field remains scattered across a large area, a silent testament to the catastrophic implosion that occurred in 1963.
What are the common misconceptions about the Thresher disaster?
One common misconception is that the Thresher sank due to enemy action. In reality, the disaster was caused by a mechanical failure and design flaw. Another misconception is that the bodies could have been recovered if the technology had been available. The reality is that the implosion would have destroyed the bodies beyond recognition, making recovery virtually impossible.
Why wasn’t the USS Scorpion (another lost US submarine) subject to the same SUBSAFE standards initially?
The USS Scorpion (SSN-589) was designed and built before the Thresher disaster. The SUBSAFE program was implemented in response to the Thresher loss, meaning the Scorpion, which was lost in 1968, never underwent the rigorous SUBSAFE upgrades.
Could advanced DNA technology be used to identify remains if any were recovered now?
While DNA technology has advanced significantly, the chances of successfully identifying remains from the Thresher wreckage after so many decades are extremely low. The extreme pressure and conditions at the bottom of the ocean would have severely degraded any remaining DNA, making it unlikely that a viable sample could be obtained.
How often is the Thresher wreckage site monitored, and by whom?
The U.S. Navy continues to periodically monitor the Thresher wreckage site, primarily to detect any signs of radiation leakage. These monitoring efforts typically involve deploying underwater vehicles equipped with sensors to measure radiation levels and collect water samples. The data collected are used to assess the long-term environmental impact of the disaster.