A pressure hull in a submersible is the structural enclosure that contains the crew compartment and other vital equipment. It is designed to withstand the high pressure exerted by the surrounding water at significant depths.
Carbon fiber is often used to construct pressure hulls in submersibles due to its exceptional strength-to-weight ratio and excellent resistance to corrosion.
However, the death of those aboard can be likened to design flaw, here’s why.
The implosion of a carbon fiber hull in a submersible could occur under extreme conditions of external pressure, specifically when the pressure acting on the hull exceeds its design limits.
If a submersible descends to depths beyond the hull’s maximum rated pressure, in the case of the Oceangate’s sub it went as deep as 12,500 feet, the external pressure exerted by the surrounding water can become too great for the carbon fiber to withstand.
Implosions can also occur if there are structural flaws, defects, or damage to the carbon fiber hull. Weakening of the material due to fatigue, impact, or degradation over time could reduce its strength and make it more susceptible to failure under pressure.
Bear in mind that a year earlier, same Oceangate’s sub went for this same voyage but a repeat on Sunday 18th, June 2023 the 5 people aboard met a fatal fate as the submersible imploded killing everyone immediately.
Photo attached shows how it looks inside the Submersible, no seat just a mat to seat on with a small toilet that is often rationed between those onboard.
~ OM