DB, I have been busy and I am back to the blog just now. I thought about it and I would feel uncomfortable to suggest to "reject the entire batch" based only on my calculation. I did it just to compare Meregildos. My calculation are based on a waterline length measured "from the base of the cathead to the stern post" which is good to identify a "pattern". If we want to give ARES a better advice I should redo the entire check starting from proper data. For instance if the line drawing you posted are 1/1000 scale I can compare them with the models taking measures from both the drawing and the models. In this way the results would be more reliable. What do you think? Does it make sense?