Season 9, Day 4, Red Server, Race 2, Cancel explaination

[Petter]

1. Your registered Boat Name: Petter

2. Race Day: 4

3. Group: Red

4. Race : 2

5. Time (in Replay): 07:10

6. Rule(s) applicable: 13, 19

7. Skipper(s) involved: Balder, Petter

8. Description:
I call RTT but Balder does not give me room to tack at the obstruction.