Used when the semaphores malfunction - the flag of the organizing club.
Green with a yellow chevron.
Chequey in black and white
A red flag
Blue flag, fixed or waving.
Blue with red saltire. Shown with a number.
A white flag.
Diagonal bicolor, white over black. Shown with a number.
Black. Shown with a number.
Black with a red centered disc. shown with a number.
Seven yellow and red vertical stripes.