. . . as she had no headsails . . . .

. . . and the boat to which I referred, correctly, as a very
dark-hulled ayana 48 did not have any sails up at the time and,

No, she was not sailing, was not in use and remained in her slip while UK
repaired her head sails.
The boat you saw was a vessel which had dropped it's sails for a reason. You
were close enough to see "smiling faces" but you did not attempt to hail her?
I see.
I can't wait to relate this story to Mike at Harlem Yacht Club. I hope you did
well in the race.

RB