Doing some calculations from the info provided.

From the intial hail point the Flying 15 would have moved 7 boats lengths in the time it took the F16 to move 20 boat lengths. Plenty of time for the Flying Fifteen to take avoiding action. However the Flying Fifteen claims he didn't have steerage way so perhaps there was 5 knots of apparent wind on the cat and the FF wasn't moving enough to have the ability to keep clear?
It is to fine a point to argue without more info, GPS tracks are good for sorting these issues out.

Darryn
1782