Does anyone have any practical solutions for reducing or stopping water slap while anchored or in Marinas for the aft cabin. My last boat was wood with 1" planks and it was never a problem this one is GRP.
Its not the construction its the design broad flat transoms will always do this only thing I can think of is a heavy tarp wighted so it hangs in the water round the stern and stops waves running under it might help but havent tried it as I still have the wooden boat!! You other question on sterlizing water you could try a home brew shop as they use the stuff for sterelixzing bottles or try stuff sold for sterelizig babies bottels (Milton in UK) which is easily available at all chemists and I have found very effective for maintaining tanks in 'clean water' areas
I have a "slapsilencer" (google it, can't remember the website) which is superb, needs a 5 minute faff to set it up but it works very well indeed. It costs around 230 dollars but you could probably make one with some B&Q pipe lagging and a bit of rope. Any spongy stuff along the water line underneath your transom should work.
We rarely have the problem but I could fall deeply in love with pipe lagging /forums/images/graemlins/cool.gif Saw some fittings to put on the guard rails to comfort the back - on inspection they were pipe-lagging with a cover - should be easy to make - roll on DIY !