I got this recent picture of a couple of jobs in the Pedigree Cats yard. Is the truck under the Shuttleworth 53 new?  The cat has been there since Bill Clinton was president.  It has a luscious interior but looks very dated outside, to my eyes.  And the structure is more flexible than I insist on.
The big unit on the left is interesting. It is something like 86′ and nice and wide. It does have no visible main beam under the mast inside. The fiberglass box beam is under the floor. All glass. I did a quick calc and recall predicting a deflection of 2″ (50mm) from mast load upwind.  Might be moderately alarming?