I don't know, Elmer, did you?

As noted in my post, I referred to Bert's link to his engineering drafting expertise. My own drafting experience is preparing working drawings primarily for residential construction. IMO manual drafting is a visual art, as are aspects of the conception of the whole design of a house.   

We have a residential design business. Over the years, I've worked on the concepts, drafted and built models, but as time has progressed, I now spend much more time running the company. Its works well, because my husband/partner is far more skilled with concepts, interpreting clients wishes and producing illustrations than I, but I still put my two bits worth in as required, do illustrations using Photoshop and draft when needed as well.

I had forgotten that the website also had the boat noted. Only the interiors of the boat were designed and drafted by us, unlike complete house linked on that site.

I also do biological illustrations for fun, but it is not how I earn a living and in the case of the fungus, I can't claim I designed any part of the object, nor provided visual directions on how to construct it. LOL. Using my old drafting pens, I just copied what I saw under the microscope .