re: the numbers on my spinnaker for Samaki – Dayboat class A. I have a second hand spinnaker which has the number GBR 1493 on it (North sails print them on so it can not be removed).
I have drawn a black line through the middle of that number and printed on my correct sail number which is GBR 17.
Hopefully that will not confuse the race committee on the inner course.