Like sleeping inside a congo drum

[Markhunter1097]

The product to stop this is called slap silencer
SlapSilencer eliminates excessive wave slapping noise in aft cabin sailboats | From Anson Sailmakers NH

[thereefgeek]

Are Bennies cored hulls?
Might have something to do with the layup of the glass hull.
I have a B 373 parked next to me in my marina right now and when I step outside of my Tayana 37 all I hear is glug glug glug as the wind swell passes under the sugar scoop stern.
Must have something to do with the amount of wetted surface. This Bennie has a shorter mast, sits more than a foot higher in the water to the rail, and has a coach house that sits at least 2 feet higher than mine.
When the wind blows heavy through the marina (she’s just down wind of me), our mast hardly moves and she’s heeling back and forth like a rocking horse.

[nilespf]

Originally Posted by zboss

That’s the nature of thin hulls... one of the major reasons we went for an older thicker hull design. Our boat is not only quiet at anchor in most conditions but also cruising at 6 knots. Not even a squeak.

It's due to the scoop stern- nothing to do with hull thickness

[KJThomas]

Originally Posted by comesatime

I spent the night in the aft cabin of a 2015 Beneteau Oceanis 37 and was surprised how noisy it was all night.

I think the swell/wave slap against the aft bottom/swim step was echoing through the boat...

Is this common and/or avoidable?

Yes it is aviodable. Yet another reason to buy a catamaran.

[cabo_sailor]

Originally Posted by KJThomas

Yes it is aviodable. Yet another reason to buy a catamaran.

Yep, on the cat you can listen to the bridge slap. [emoji16]