CALL UMP 12              

Rules 10, On Opposite Tacks
Rules 16.1, Changing Course

Question 1
Yellow and Blue approach each other. As they pass, Blue is keeping clear to leeward. Yellow luffs and as a result Blue is then unable to respond to keep clear. The stern of Yellow makes contact with the port side of Blue. There is a Y flag. What should the call be?

Answer 1
Yellow breaks rule 16.1 by changing course without giving Blue room to keep clear.Penalize Yellow.

Question 2
Yellow and Blue approach each other. As they pass Blue is keeping clear to windward. Yellow bears away. Blue is unable to respond and there is contact. There is a Y flag. What should the call be?

Answer 2
Yellow breaks rule 16.1 by changing course without giving Blue room to keep clear. Penalize Yellow.