From what I've heard from a relative of mine who works in the industry, there were also a few features requested for that machine which haven't been included in

From what I've heard from a relative of mine who works in the industry, there were also a few features requested for that machine which haven't been included in another boring machine of nearly that size, so very experimental. They also said that Hitachi Zosen ultimately won the bid because all the other competing companies bowed out because they considered it to be far too risky, and it seems that they were ultimately right in doing so.