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Subject: TWL: Re: Hull to Deck Separation
From: Michael Maurice (mikem@XXX.XXX)
Date: Thu Aug 01 2002 - 17:32:37 EDT
To: "Bob Austin" <thataway4@XXX.XXX>
Subject: Re: Hull to Deck Separation
At 03:36 PM 7/31/02 -0500, you wrote:
>Michael,
> There were a lot of these in many of the early sailboats--Island,
>Erickson, Columbia, Coronado, Lancer also Bayliner in the power boat. Most
>of these were pop rivited thru an extrusion, and no glass was applied. I
>have not hard of one comming apart that was properly glassed together.
>
>Bob Austin
I have had a look at the at the 47' Silverton, 2000.
The bowsprit was slammed down into a big wind chop, in the Columbia River.
The area where the sprit is attached to the hull is pretty weak and it
broke and cracked in places.
A piece about a foot long, essentially fell out and let a LOT of water into
the boat. The bilge pumps failed
and the high water alarm failed.
There does not appear to be any serious damage to the hull itself, as the
bowsprit simply was forced up away
from the hull and the joint for about 5 feet on one side and about 3 feet
on the other separated.
The hull and deck were fastened with bolts, some of which have torn out.
The outside walkway is recessed and has drains not big enough to flow all
the water that came over the bow.
In summary, I am not critical of Silverton, except for the lack of glass
reinforcement to keep the two parts together.
This sort of bowsprit design is inherently at a disadvantage under similar
conditions.
The dinghy was also lost. The lines to fasten it down were attached to the
"supports" under the dink. One of them pulled loose from the deck, as they
were only screwed down. Everybody should remember, that the lines should
always be fastened to the big boat, not the supports, for just this reason.
And the lines should never be dependent on the dink's inflation to keep the
lines tight.
This boat was knowingly pounded and the bowsprit is so large, that I
suspect there would have been damage regardless of how it was built. A
"professional captain" was at the helm. By the time the damage is repaired,
the summer will be gone. So much for the owner's vacation.
Capt. Mike Maurice
Near Portland Oregon.
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