hlsooner:From the video, it looks like the O will be resting on her side, guess I will keep working towards my Trimix certification if I ever want to explore the hanger deck of this monster.
You would probably want to be trimix certified to explore the hanger decks, even it had stood straight up. At the depths that the hanger depths would have been; it would have been easy to go into a decompression obligation. I suspect that there will still be parts of the ship will be explorable from recreational depths, but it's going to be a non-prenetrating dive and somewhat of a short dive. It will probably be within the 90-130 depth ranges for recrational divers. Instead of a "reef dive" it will be more like a "wall dive".