Wilbur Hubbard wrote:

I Googled some pics of the Trust's brigs (they are brigs according to
definition because the pictures showed they are both square-rigged on
both masts with no fore-and-aft sails on the masts) and they are nice
looking boats.

Must try harder on the old observational skills, matey.

They *do* have a fore-and-aft sail on the after mast. It seems to be
a common feature of virtualy all sizeable vessels of this era that at
least the after mast always has at least one gaff sail. One must
presume there must have been a technical reason for this.

The distinction between brig and brigantine is simply whether the
after mast is *exclusively* fore-and-aft or *also* has square sails.