Well the trusty old Bolkow is slowly being phased out, and it's up to the new generation now to replace her.
It's only natural to look around and see if there are any other established operations doing the same thing, but so far, with the lack of response to this thread, it can't be a common thing. So perhaps this is a world first for the 902 in this role (underslinging from moving vessels?) Do I stand to be corrected?