Whitby 42 Brewer Sail Boats

Hi Folks,

On our 1979 Whitby 42 we have a noticeable amount of deck compression under our mizzen mast. The mizzen is also raked aft appreciably compared to the main mast. Our boat does not have a stay between the mizzen and the main (triatic).

Some of the signs on our boat:

-- The deck aft of the mast step has sunk

-- The aft head door has been sanded / filed to close

-- The formica on the bulkhead in the head has a vertical crack

-- After removing the mizzen the head door now has 1/2 additional clearance at the top corner near the bulkhead

Now that we have the masts removed I am hoping we can address the compression issue by jacking up the floor under the bulkhead and adding a permanent support.

Anyone else added a support under the floor for the mizzen?

Scott

BTW - I have drilled some exploratory holes under the mizzen step and have only found dry hardwood core.

Oh, and I forgot to mention the base of my mizzen mast was not thru-bolted to the deck. The bolts in the base plate shown above were screwed into a fiberglass filler in the deck. I plan on fabricating a new support plate that is wider in both directions to allow thru-bolts to be used.

Read this article and you'll understand why.

www.landfallnavigation.com/harrowing.html

Scott

Hi,
Randy Robinson here. After a lot of research Diane Gorch and I just bought a 1979 Whitby Hull # 134 in Nov. 2009. We knew at that time we were 1 of 3 hull #’s that had lost their mizzen mast. In our case it was in a storm on Lake Huron. A triatic stay was added and no problems in the last 20 yrs. No compression issues.
Have you used a moister meter on the deck? You can pick one up on e-bay at half the price. I think it will be worth it to you.
Our boat is in Sarnia, Canada and we are in Michigan, USA. I will be going over to work on it this week and I will take pictures of what ours mizzen looks like and send them on. I hope it will be of help.
Good Luck……………rr

I happen to believe that the mizzen mast support needs to be beefed up. The internal lamination on the heads bulkhead, on TIH, has a bulge and the door frame shows signs of warping. In the case of TIH this is not an issue as the Mizzen has been removed. I don't believe that reinforcing needs to be a difficult project

First check the base to ensure that there is no compression of the core.

Then look at this solution I photographed during the rendezvous; (In case the photos don't show up here this is a link to my blog). Note that I left the photo of the owner in the shot so that he can be tracked down and questioned. If he objects and contacts me I will be happy to pixelate his face to protect his identity :-).

The Incredible Hull

Thanks for the responses so far and the pictures.

I checked out the pictures on TIH's website. It looks like a compression post was added under the cabin sole to the bottom of the bilge along with some reinforcements bolted to the bulkhead. I wonder what is under the compression post in the bottom of the bilge?

The bottom of my bilge looks like some smooth poured resin with a small sump towards the engine. I wasn't sure if this was a false floor or some sort of filler under it. Does anyone know?

If I can avoid laminating a new floor between the seacocks it would save me lots of time.

The aft bilge is pretty solid, at least on top. Not sure what they chucked in to fill it below the top few layers of fiberglass.






I whacked it a few times with a mallet with no result before I covered it with epoxy/sand mix. I would use as large a plate as possible to spread the load.

Gerry

theincrediblehull.blogspot.com/search/label/bilge