Amazing. I saw the introduction of 'high tech fabrics' into sails up close when I was working with/for TD Sails in the Netherlands. The owner was - besides a very nice guy - into materials technology and math and the combination was quite interesting. He was also a visionary, spending a lot of money on CAD when everybody else was still laying out sails by hand and attempting to automate the fabric cutting stage. This was just when water jets were becoming feasible but I don't think he ever managed to get their cutting table to work.
Theo Dokman more or less predicted that the sailing industry and the aircraft industry would converge in terms of high tech while the customers were still asking for 1880's style 'brown' cloth sails for the traditional Dutch fleet.
He would have been super happy to see this, this (and some predecessors) validates pretty much everything he talked about. I'm absolutely amazed at the specs of this vessel, if you take into consideration the length of the hull and the speeds it can attain and in what kind of sea states it is able to do so. The difference between 'theoretically possible' and 'let's build it' here is so large that I wonder what the total bill for putting this out there was.
Note that it hasn't gone hydroplaning yet (apparently the surfaces are not yet fitted), but they're slowly working up to it.
https://www.youtube.com/watch?v=ZjiGtwd8q4Q
around ~1 minute the interesting bits start.
> while the customers were still asking for 1880's style 'brown' cloth sails for the traditional Dutch fleet
That is missing the point a bit. For quite a lot of fleets, keeping the tradition alive is a very important aspect of sailing/racing said boats. The other aspect is that for these "one design" classes, the rules, including what the material of the sail is, are meant to keep the old boats competitive and, probably the most important aspect, not end up with pay-to-win situations.
No, you are missing the point a bit: the brown fleet was what brought in the bulk of the bacon, but meanwhile everybody working at TD was far more interested in the future of sailing than the past (case in point: Maurice Paardekooper's experimental kevlar sails for his laser class boat), but the high tech future of sailing was - and still is - a complete money pit without much in terms of practical applications. Of course they made also lots of conventional sails, spinnakers, mainsails and so on for regular sailing vessels, but that was cut-throat and there were many providers of such sails.
The brown fleet was a money pit as well but for the providers of the sails (I believe these days mostly Gaastra but possibly others, Gaastra was going more and more in the direction of sports goods) it was still a money maker.
The key here is that Dokman was amazingly knowledgeable through his long term interaction with the people running the brown fleet vessels, who - as you pointed out - also love to have an edge in their races and TD sails were amongst the best there were at the time: absolutely legal with respect to techniques and materials used but meanwhile engineered with the best software that we could lay our hands on or build ourselves.
So you could be a recreational or for-hire vessel on most days and a potential race winner if you decided to enter a contest, and they looked spectacularly clean. That gave us the best of both worlds, a step-up into high tech while still mostly using traditional materials and techniques.
Edit: Theo died a while ago and I still see TD sails every now and then and it always reminds me of a great time. I didn't have a house back then (housing shortage in NL is not something recent) and slept above the sailmakery :)
Here are some in their natural environment:
https://primary.jwwb.nl/public/p/r/h/temp-wqhdccofnxpbaxjxoo...
(not the traditional 'sword' visible on the side, a large wooden structure on a hinge that could be lowered for stability, these vessels are extremely shallow because they're made for inland waters and shallow 'Waddenzee', the typical draft is less than a meter).
More of the same vessel:
(The ‘sword’ is called leeboard in English)
Thank you, I did not know the term!
not -> note