Y10 Fibreglass Stain Remover Boat Cleaner.
We offer free shipping for UK mainland if the order's more than £75
Y10 rapidly absorbs yellow/brown waterline and transom stains without rubbing, scrubbing or any effort whatsoever. It is said by some old sages that you can do the job with Swarfega (you can't) or a solution of oxalic acid (you can if you can a: find it and b: get it so stay on a vertical surface long enough to work).
340 gram pot.