Clarification needed. If you go on a cruise ship to see something say whale watching or visiting something like a glacier dumping icebergs into the sea the vessel will be constructed to meet standards. It will have regulations on maintenance and construction standards. Without that the company offering the trips would not get insurance and would not be able to operate.
A submersible trip to titanic had no such standards, regulations, insurance or control? Wild West of holiday offers or what?
Sorry if that's insensitive but how was it allowed? Who let it happen? I hope officialdom learns from this. Indeed submersible industry learns too.