Quote:
Safety
Common to the entirety of Triton’s fleet is third-party attestation to the integrity of the design and build by a recognised international Classification Society. For Triton, the Limiting Factor could be no exception and although the process is expensive, arduous and time-consuming, it is the best guarantee that a submersible has been developed thoughtfully, carefully and with engineering rigour.
Commercial certification also provides the gold standard for vessel safety. It allows the sub to be insured by standard maritime agents and should give peace of mind to any sub passengers that they will be as safe in their dives as on any other commercially-rated vessel.
On completion of the fifth and final deep dive, DNV-GL will certify the Limiting Factor for repeatable dives to full ocean depth.
The Limiting Factor features multiple, fully redundant methods of returning to the surface. The primary methods do not require any electrical power, while others do. This provides for emergency ascent conditions in every possible submarine power state. It should be noted that the sub has twelve separate batteries and in the case of no electrical power availability, the main ballast weights are designed to release for immediate emergency ascent.
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https://fivedeeps.com/home/technology/sub/
This seems well thought out. If you compared the 2, I'm not sure how you could come to the conclusion it was worth the risk and lack of rigour.