Jim:

Can you expand on this? If I buy a used book or CD from Alibris, or
e-bay (for example), am I obligated to send the author or composer a
fee?

Since RB is in possession of the BR plans, can't we assume that he has
acquired them by purchasing them from BR, and that he has therefor been
granted a license for this set of plans?

I am assuming that RB is selling the plans because he has decided that
he won't or can't build the design, i.e. that no vessel has been
constructed from this particular set of plans, or 'license'.

But even if he had built the design, how is BR any different than say,
James Michner or J.K. Rowling when it comes to the re-sale of their
'intellectual property'?

MW