If you want, I'd be happy to assist you in this. I care, of course not, to have any credit for it, but only to enhance your otherwise quite terrific drawing! But, just let me know if you care to have my help!
- As for the actual flags flown, I'm not particular, since do we know at what particular occasion such and such royal was present onboard, with the privilege to let fly their banners? Seldom so, I think. In fact, if so desired, several 'flag'-versions could easily be made, including the museum-variant, which still (as far as I'm cognizant thereof!) wears the colors of the RN. - And we have been waiting for this ultimate yacht for such a long time!