Thank you for your reply. To add, I just have finished watching James Cameron &Bob Ballard interview. They say that if you’re going to Titanic you should be worried about entanglement, you shouldn’t be worried about the basic
integrity of the hull /the platform. I googled for entaglement, apparently there have been…

Forgive me for another stupid question. Is there an engineering reason no to attach a tow rope to the submarine?? So if something happens people on the ship can pull it back? I figured it only takes 24 pieces of these and the cost is not that much. Of course it should be thicker, but I was trying to have an idea of…