Sounds like this sinkhole is a non-trivial dive, but depth-wise it's only 200 meters. Pressure vessel engineering should not be the limiting factor. Also, for whatever reason, this guy left OceanGate in 2013.
If they use CF composites again, it doesn’t matter. They have a limited lifespan and will eventually fail from the load cycles of diving and coming back up.
Which is why nobody else uses CF in pressure hulls. It’s a ticking time bomb with no way to properly validate integrity.
They won't. They will use two Triton submersibles, the market leader that builds submersibles for a long time. They are not going to build their own fever dream.
Not to mention the Expedition leader left Ocean gate over 10 years ago.
This is not interesting at all and is click bait that shouldn't even make the news section.
(Also, the last one was their own fever dream... made of CF. Just saying.)
I figured something was odd when the expedition page didn't have pictures of the submersible on it, and just mention it in one sentence somewhere.
Edit: Waybackmachine Was a relevation
The Technology To Get Us There
We push the limits of technology, science, and human endurance to raise awareness of Planet Earth, our “Blue Marble”. For this expedition, we will use a variety of ocean exploration technologies, including:
The Cyclops submersible, made by OceanGate, has eight hours of life support for a crew of five and an emergency system to support five people for four days. With a 57” acrylic dome that allows for 180º degree visibility, Cyclops will enable our crew to descend as far as 500 meters below Dean’s surface with unparalleled visibility. It is equipped with internal and external lighting and video equipment for capturing the highest quality of video content while we explore.
Cyclops can descend 500 meters and is designed to meet the most rigorous needs of governmental and commercial expeditions. With control spheres to house sensors and controllers outside the pressure hull, it has minimal hull penetrations to
Also:
When exploring the depths of Dean’s Blue Hole, we’ll be able to venture beyond the submersible thanks to the EXOSUIT, developed and built in Vancouver by Nuytco Research Ltd. Constructed from aluminum alloy, it’s also lightweight — 500-600 lbs — and can operate underwater for up to 50 hours at depths up to 1,000 feet. A number of rotary joints that mimic elbows, knees, and shoulders allow for significant mobility, giving divers exceptional dexterity and flexibility to perform delicate work. The EXOSUIT is equipped with 852 Ultra-Miniature scanning SONAR.