Hi
Both are guilty!
Both violated the rules of 5,6,7 and 8. The engine of the boat violated the obligation to avoid Rule 16. I am thinking of guilty of breaking 20% sail 80% of a motorboat according to the aforementioned colores rule.
Here's a similar type of accident about a month ago. A little boat drove 90 ° from the left sea rays foward, at both speeds about 25 knots. The case is going to justice and the two leaders are accused. On a smaller boat, there were 2 adults and 1 child and 2 dogs.
NBs