Hi Marty, before I remove the link I'd like you to be bit more specific about the ownership of the drawings. I assume you have already been in contact with the site owner. As these drawings are more than 70 years old their status is complicated under dutch law. What you can protect is probably your research and this may explain the "AC" mark and maybe scanner / picture details in the layout.
The first, side view, drawing is from a publication called "Het Schip". Current copyright holder for "Het Schip" is swz maritime,
http://www.swzonline.nl/.
The second scan of drawings are yard drawings from RDM itself and are probably the drawings you refer to. All assets of RDM (which managed to get broke both in 1983 and 1996) are currently held by the City of Rotterdam which put the yards' older drawings in care of the Rotterdam Maritime Museum which is probably the current copyright holder.
Cheers,
Pieter