The links to pictures of the Dubai Shadow prove, without a doubt, that
the MY Bart Roberts was not used.
I heard that MY Bart Roberts was sold, I checked and found that her
home web page is still up:
http://www.mvbartroberts.com/main.html
We can see the differences between the two ships: MY Bart Roberts
has the Helo-deck on the stern (with an expanding shelter), and her
main house is aft. Also she has a Portuguese Bridge that was added
during conversion from a Canadian Buoy Tender.
Regards