Creaks in Nonsuch 33 - delamination?

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Michael Smith

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Aug 28, 2018, 8:46:44 PM8/28/18
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I own a Nonsuch 33 Sea Hero.  I have noticed that the side decking emits creaks when walked upon on the starboard side from about the start of the cabin, until aft of the head porthole.  Also, inside the boat emits loud creaks in the area of the head/shower when it is on its mooring, but rolling in rough water.

Have other owners experienced similar problems?  Can anyone suggest what steps I should take to investigate the problem further?

Mike Smith, CT


Dakinh

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Aug 29, 2018, 5:41:32 AM8/29/18
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The cabin top on my 33 creaks when I walk across it in the area between the two deck hatches. While sailing, it creaks where the forward bulkhead meets the overhead cabin liner.  The boat was surveyed a year ago for insurance purposes, the surveyor found no evidence of moisture in the affected area. If the creaks concern you, consider having someone knowledgable with a moisture meter and percussive soundings test the areas for moisture. If the area is dry, leave it be, that's the guidance I received.

Ken Dakin
NS 33 #7
Sashay
Burlington ON

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Mark Powers

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Aug 29, 2018, 11:43:51 AM8/29/18
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Mike,
Get a 6 pack of beer and a good friend, preferably one with skinny arms. Go to the boat on a sunny day armed with wrenches, screw driver, sockets and a ratchet handle, preferably one with a swiveling head. One of you sits on the deck and the other goes below. Work your way along the deck tightening the bolts holding the deck to the hull. You need to make sure that you are working on the same bolts so that you don’t break the seal by turning the head of the bolt. You just want the nut to turn. You may not be able to access all of the nuts. This may stop or at least reduce the creaks and is a good thing to do in any event since they seem to lossen over time.

When you are too tired and sore to do more stop for a beer. About that time you will wished you had bought a 22.

Mark Powers
La Reina 26C
Vancouver, B.C.

Joe Valinoti

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Aug 29, 2018, 1:03:08 PM8/29/18
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One must be careful not to over tighten these as it will cause stress cracks
as I found out..

Joe Valinoti
S/V IL Gatto NS30U #221
Sea Harbour YC
Oriental, NC USA

~ ~ ~ ~ ~ (\_ ~ (\_ ~ (\_~ ~ ~ ~ ~ ~ ~ ~ (\_ ~ (\_ ~ (\_~ ~ ~ ~ ~

Tom Schoenhofer

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Aug 29, 2018, 3:27:13 PM8/29/18
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I might have the same creak. It's very annoying. Is there a mirror on the bulkhead near the creak?

Granted my boat is a 26C and not a 33 but we have a loud creak caused by the mirror in the bathroom on the bulkhead rubbing on the fiberglass/gellcoat headliner at the top. Using a thin blade to stuff a piece of paper in the crack makes it go away until the paper works its way out of the crack again. 
It is very loud when anchored and there are waves causing the boat to roll. It can be heard when someone walks on the deck or cabin top near this bulkhead at any time. The deck moves just a tiny bit but the material of the mirror and headliner love to stick together and not slide quietly.

On my to do list is to remove the mirror one day and sand or shave off a bit of the mirror at the top but I am worried I will damage the teak trim holding it in.

Tom
26C #28 North Star
Penetang 

Mark Powers

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Aug 29, 2018, 4:28:15 PM8/29/18
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Joe,
 No stress cracks so far. More by good luck then good planning. I must have inadvertently avoided the urge to over tighten the bolts.

Mark Powers

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Aug 29, 2018, 4:36:21 PM8/29/18
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Tom, 
The best way I found to avoid damaging the trim is to start to drill out the wooden plugs using a brad point drill that is slightly small then the plug. The point will keep the bit from wandering. Once the hole is started switch to a standard bit so you don't damage the point by hitting the screw. When the plug is mostly gone you can dig out the rest with an awl and then remove the screws. More knowledgeable wood workers may have better solutions.

When you reinstall the mirror be very careful to avoid scratching the back and remove any of the silver. I wasn't careful enough and am reminded of that fact every time I look in the mirror. Lee Valley sells a set of tapered wooden plug cutters that you can use to make new plugs. When you insert the plugs try to line the grain up. Then use a flush cut saw or a very sharp chisel to cut the plugs flush. A bit of teak oil will then generally bring the plugs to a close match to the trim.

Mark Powers
LA Reina 26C
Vancouver, B.C.






Bill Wickett N22 #38 Makin' Time FPYC - Hamilton

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Aug 29, 2018, 8:37:24 PM8/29/18
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Ahhh, so that is the same creak we have on the 22. Starboard side deck at the forward head bulkhead. The things you find out on this group. Thanks. 

Bill Wickett
Makin' Time
N22 #38
FPYC - Hamilton, ON

Tom Schoenhofer

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Aug 30, 2018, 2:06:01 PM8/30/18
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Ok Marc
Why did you have to remove the mirror?
What was the mirror made of?


Thanks

Tom
26C #28 North Star
Penetang

ernest...@gmail.com

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Aug 30, 2018, 9:22:26 PM8/30/18
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How interesting !!

A tale of smoke and mirrors .....    On my N22, I have not heard this infamous creak emanating from the starboard forward bulkhead (where the mirror (acrylic, methinks) is affixed to). Then again, at my advanced age, I am sufficiently DEAF enough not to hear it. However, I am thankful that, upon gazing at my countenance in said looking glass, I see so zestful and vital a person who can still get away without the need for a make-up artist. I am one lucky and humble SOB.

But, seriously, folks .....   is it possible that the metal "thingamajig" that pierces the cabin roof and holds the bulkhead in place is, just possibly, responsible for this creak ??

Ernie A. in Toronto

Katmando

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Aug 30, 2018, 11:41:09 PM8/30/18
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The only thing that creaks on Katmando is me and no amount of lubrication has been able to do anything about that but whenever an errant creak threatens, I use teak oil on the wood and sail-coat dry lubricant on the other bits....

Works well.......

Brian McCuaig. NS30u
Whitby, Ontario

Having a yacht is reason for being more cheerful than most." -Kurt Vonnegut

Mark Powers

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Aug 31, 2018, 1:05:07 AM8/31/18
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Tom,
I was hunting down a water leak. I thought it might be coming from the bracket that goes through the cabin top and bolts to the bulkhead forming the forward wall of the head and to which the mirror is attached. I removed the mirror so I could access the bolts so I could lift the bracket and re-seal it. The nuts for the bracket are under a small wooden cover on the forward side of the bulkhead. Unfortunately the bolt was spinning so I had to hold it from the mirror side.

Mark Powers

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Aug 31, 2018, 1:06:30 AM8/31/18
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Tom,
P.S.
The mirror is made of plexiglass.
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