Although the first video states the bolted repair piece is designed for near waterline use, TRY IT, try something.
Incorporate a hydraulic clamp instead.
This repair should be getting the global attention it deserves.
Very sad, very frustrating to be led by such idiots with money.
Extreme depth effects
The breathing gas mixtures, of oxygen, helium and hydrogen, for extreme depth use are designed to reduce the effects of high pressure on the central
nervous system. Between 1978 and 1984, a team of divers from Duke University in North Carolina conducted the Atlantis series of
on-shore-hyperbaric-chamber-deep-scientific-test-dives. In 1981, during an extreme depth test dive to 686 metres they breathed the conventional
mixture of oxygen and helium with difficulty and suffered trembling and memory lapses.
A hydrogen-helium-oxygen (hydreliox) gas mixture was used during a similar on shore scientific test dive by three divers involved in an experiment for
the French Comex S.A. industrial deep-sea diving company in 1992. On 18 November 1992, Comex decided to stop the experiment at an equivalent of 675
meters of sea water (MSW) because the divers were suffering from insomnia and fatigue. All three divers wanted to push on but the company decided to
decompress the chamber to 650 MSW. On 20 November 1992, Comex diver Theo Mavrostomos was given the go-ahead to continue but spent only two hours at
701 MSW (2300 ft). Comex had planned for the divers to spend four and a half days at this depth and carry out tasks.
Increased use of underwater remotely operated vehicles (ROV's) and autonomous underwater vehicles (AUV's) for routine or planned tasks means that
saturation dives are becoming less common, though complicated underwater tasks requiring complex manual actions remain the preserve of the deep-sea
 Saturation diving depth records
The diving depth record for off shore diving was achieved in 1988 by a team of professional divers of the Comex S.A. industrial deep-sea diving
company performing pipe line connection exercises at a depth of 534 meters (1752 ft) of sea water (MSW) in the Mediterranean Sea during a record
In 1992 Comex diver Theo Mavrostomos  achieved a record of 701 MSW (2300 ft) in an on shore hyperbaric chamber. He took 43 days to complete the
scientific record dive, where a hydrogen-helium-oxygen gas mixture was used as breathing gas
The complexity, medical problems and accompanying high costs of professional diving to such extreme depths and the development of deep water
atmospheric diving suits and ROVs in offshore oilfield drilling and production have effectively prevented non-atmospheric manned intervention in the
ocean at extreme depths.
[edit on 21-5-2010 by HappilyEverAfter]