Very sad. If Terry was (as is suggested in one of those articles) a member of Ritchie Kohler's expedition he must have been no mean diver.
Has anyone here dived the Andrea Doria? What is it about it that makes the dive so hazardous? Is the dive intrinsically dangerous, or is it that it tempts people to do foolish things for which they then pay a high price? It isn't that deep - only just into the trimix range. Are there high currents?
None of what I say hear is meant to disparage any of the divers who have died on the Andrea Doria. I am merely responding to the question.
I have not been on the Doria, nor do I ever plan to attempt it, but it is a local dive here, so I have met plenty of people who have been on it. I think one of the things that is underestimated by warm water divers is the temperature issue. 200' in the Caribbean vs. 200' in the North Atlantic are very different experiences. Diving the Doria is a very physically challenging dive in every dimension, starting with it being quite a distance offshore. It is cold, dark, affected by currents, entanglement hazards, etc. The wreck is also now starting to deterioriate, so penetration is becoming more risky as equipment, trimix, and other advances reduce other risks. Every aspect of it is right at the limits of what can be done with scuba. Yes, it is intrisically dangerous.
Finally the history of deaths on the wreck have morphed it into a challenge attracting those who want to be able to prove that they are top tier divers by being able to say "I dove the Doria". The U-Who, which is also a local dive, has some of the same cachet. This is similar to the attraction of Everest, which has attracted a broader array of climbers over time and increased the number of deaths there.