I've decided I don't want to go on a Titanic Sight Seeing sub. If condolences are in order I'll offer them. :( Listened to a sub expert who said "the sub is an experimental vehicle, not even made out of steel, but fiberglass. I'd never go on it." The report on NPR said that you walk into this adventure with eyes wide open, taking your life in your hands, death is mentioned 3 times on the first page of the disclaimer, in a list of ways you can die.

https://www.insider.com/missing-titanic-tourist-sub-everything-we-know-so-far-2023-6