Fading of wood

Posted by Keith Voorheis on Jun 7, 2006

I have a chesapeke 17 that I built three years ago. I have varnished it every year. This year I noticed that the wood under the straps on the deck is much darker than the rest that is exposed. I sanded with 220 and it dosent seem to have done anything. Is the wood faded or does it need more sanding?