The last developments of the ADS technology (civilian diving) are still within the 350-450 metres range (Exosuit, hardsuit etc.). It is fully known that necessity is the mother of invention, and ROVs are here to stay and for greater working depths they can manage it somehow. However, my question is: Suppose there would be the need for ADS to go deeper say, 1500 metres. Could current ADS technology (Not only rotary joint based movement) answer to this demand?