Rules
Match Race Call Book

Question

The situation occurs in the pre-start, with approximately 2 minutes to the starting signal. The race committee vessel is also a starting mark. be?

Between situations 3 and 4 Blue makes a big and rapid change of course, backing her jib to bear away, and does not give Yellow room to keep clear. There is contact between Blue and Yellow. Both boats display flag Y. What should the call be?