Wave slapping under aft cabin

[Jack]

We chose the forward birth because it has better air and height. Recently on an over-night the seas had a bit more roll than usual. The one thing we noticed more this time than before was the slapping of the waves against the hull in the aft cabin. Has anyone come up with a way to minimize this noise for the guests? I have heard about someone inventing something that resembles a huge diaper. I thought that was a bit excessive though.
All help is good.
thanks
jack

 

[Ross]

those are the sounds of the sea. Set a stern anchor to hold the bow into the sea.

 

[Mike Turner]

Try rigging a fender up underneath the stern so it breaks the waves before they hit the hull.

 

[Alan]

The Anson Slap Silencer will solve your problem. It's available from the Store on this site,
http://shop.sailboatowners.com/detail.htm?group=185

-or you can make your own out of some fabric and pool noodles.

 

[higgs]

This is why I don't like aft cabins.

 

[Steve Dion]

Having an aft cabin does nothing to eliminiate the slapping. The problem is the reverse transome. The noise resonates throughout the entire boat, but just so happens to be less when yo are NOT in that aft cabin. The Wave Slapper (or whatever they are now referred to) is the only thing that supresses the noise. If the waves are comming from the bow it is NOT a problem! <g>

 

[DougM]

Some people have rigged those cheap foam swim "noodles" around the stern and have reported that they greatly reduce the slapping noise

 

[Bill Roosa]

So what Steve D is saying is don't sleep in the boat at the slip, anchor out. I would concur with this sage wisdom.

 

[tkanzler]

Until recently I had a Hunter 340, with the sugarscoop transom. Waves didn't just slap - they slammed, but it was the hull coming down on the water due to the broad, flat shape back there. Very little depth change made for very great contact area change. Sort of like the sudden stop of belly-flopping vs a clean entry with a gradual deceleration, like the bow does. Didn't need much of a wave, either, and anchoring into the wind in the usual fashion did little to stop that.

I never got around to trying suppression schemes, as I rarely anchored overnight, but that stern berth, big as it was, was unusable in anything but flat water.

All I could suggest is some of the aftermarket systems, which seem to get very good reviews. I do feel your pain, though.

 

[Jack]

Thanks

Thanks everyone...
I think I will try a few 'smaller' fixes before I get the giant aft hull sling thing.

jack

 

[BillyK]

If I used a slap silencer, I'd never hear the end of the jokes at my marina.. it looks like a diaper..

 

[kloudie1]

Same thing, Billy !! A good solution to a crappy problem !!

 

[sailaway78]

I don't think I get it

Not sure I understand this. The wave noise, and boat motion are a part of it. I certainly understand not wanting to listen to some ones generator all night. But I sleep much better when there is some boat motion and wave noise. Wouldn't have it any other way.

 

[Steve Dion]

Nice N Easy:

You would understand it if you ever heard it. I would much rather listen to the "hum" of a generator than the slapping on the stern.

This is normally not a issue when you are at anchor but when you are in a berth. It can be very loud and very annoying. The closest thing to this may be to smack you hand on the hull every few seconds (all night long).

Ear plugs and a bottle of brandy are some partial remedies, but the diaper may be better regardless of the harassment! <g>

 

[Cayennita]

Tie your fenders end to end and slip them under the overhang and then tie them to the aft cleats. I do that when there is are small waves slapping the aft end of my J-36. Some tied one of the cabin cushions under there. Not sure if it was his or found in the dump.

 

[Big Windy]

Some people have rigged those cheap foam swim "noodles" around the stern and have reported that they greatly reduce the slapping noise

Yep, a cheap easy fix.

 

[NYSail]

Have a few margaritas before bed.....

 

[Stu Jackson]

Yep, a cheap easy fix.

Yup again, either use what you already have (fenders) or buy pool noodles.

The MOST difficult part is finding the right color noodles. :dance:

 

[justsomeguy]

You could spend upwards of $300.00, for what?

 

[All U Get]

Yup again, either use what you already have (fenders) or buy pool noodles.

The MOST difficult part is finding the right color noodles. :dance:

OK we just got back from cruising Cape Cod and RI before Irene hit. We anchored and moored with hull slap being an issue whenever the wind piped up or a dingy went by. Previous trips before this cruise didn't have the same reaction. Maybe emptying the waste tanks and filling the water tanks lifted the stern. Where do you tie the noodles and are they tight or loose?
All U Get (Sleepless in Falmouth)