As an owner of both the original paper "Die Handels Flotten der Welt 1942" and "Suchliste für Schiffsnamen" (an adendum for the first) and the US counterpart ONI-208J they sure as hell had info on a lot of ships in the world. Remember most of the ships were build way before the war, and most were known models that any liner company could order from shipbuilders. All that info went into these "manuals" - correct masts could be extended or chopped, but the length were hard to remanufator.
https://www.dropbox.com/s/1dytqlrd6p...95144.jpg?dl=0
https://www.dropbox.com/s/m7scn3gs5w...93520.jpg?dl=0
In my german ship book the updates were glued in by the original owner.
https://www.dropbox.com/s/b0w5etbomu...93555.jpg?dl=0
Example - our Hog Islander tanker below
https://www.dropbox.com/s/kmbdfktxmc...93916.jpg?dl=0
https://www.dropbox.com/s/t2ovll8f2d...94038.jpg?dl=0
119 meters long and 16,5 meters in mast height.
Most interesting for CapnScurvy might be page 23 of ONI-208J in the revised version. And notice how all measurements are taken from deck and not waterline, as the waterline are suspect to change from how much the ship was laden.
https://www.dropbox.com/s/i4ha4zavzpoymsc/p23.png?dl=0
Best regards
Mav87th