Thanks Julie. That was a really good quick refresher
I'm lodging an appeal about Q4 though . You might know the actual buoy so you can confirm it in context by reference the chart and local conditions, but I'm going only by the picture. I reckoned it was a N but you said it was an E. You can only conclude it's an E by considering the box at the bottom (battery box?) to be part of the buoy, which doesn't seem correct to me (because there is never a gap between the black and yellow parts of a cardinal) so I'm sticking to my "N" guns