An over-tensioned rig and/or weak laminate is also one of the explanations that
Don Casey gives for dimples near the chain plates in his book on inspecting old
boats. He also points out that "hard spots" may result from the hull flexing
over an internal structure like a bulkhead. This may be cosmetic, but
apparently the concern would be whether the glass is fractured and the hull
weakened.
He also recommends standing astern to see if the hull (and rudder/keel) are
fair and true as they can distort over time for a variety of reasons including
how they are blocked in the yard.
These are not issue unique to C&C's, but potentially could afflict most any
boat.
GrahamSpellboundCleveland, O.
On Monday, November 28, 2016 9:02 AM, "Hoyt, Mike via CnC-List"
<cnc-list@cnc-list.com> wrote:
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At our previous club (Barrachois Harbour Yacht Club) one of our members and the
founder of the marina was a former boat builder and was at the time buying and
bringing boats to the marina for resale (smart way to fill a new marina). As a
boat builder Dana would refurbish most of the boats prior to reselling them.
Usually this included rebidding of chainplates, often recoring the deck in that
area and sometimes even repainting the topsides (usually Awlgrip if I remember
correctly). The favourite boat for Dana to bring in was the C&C 30-1 although
there were also Aloha 27s, C&C 27-3 and even a couple Niagara 26 and a C&C25 or
2. Dana noticed the dimpling on just about every C&C30. His opinion was that
it occurs from tensioning the rig tightly (shrouds). When refinishing topsides
he normally had to fill these dimples to make the finished painted product look
as it should to his satisfaction. A funny side note to this story. The one
C&C 30 that they decided to keep as their own was briefly considered to be
renamed “Spray Nine”. Dana had painted the boat once (three coats) and was not
completely satisfied. He repainted the boat again and then a third or fourth
time. Eventually using 9 coats in total before he was finally satisfied. This
1979 C&C 30 was immaculate. It is now known as Fly by Wire and still looks
fantastic. (with no dimples) Mike Persistence Halifax From: CnC-List
[mailto:cnc-list-boun...@cnc-list.com]On Behalf Of RANDY via CnC-List
Sent: Monday, November 28, 2016 12:01 AM
To: Dave
Cc: RANDY; cnc-list
Subject: Re: Stus-List Buckled Topsides at the Chainplates (was Re: Brokers and
surveyors) Thanks Dave. My boat has a non-hydraulic backstay adjuster, and
has a "dimple" in the topsides in the area of the port chainplate. I did have
it professionally surveyed, and the surveyor didn't mention it or didn't notice
it. I also inspected the boat carefully myself after buying it, following the
procedures in Don Casey's "Inspecting the Aging Sailboat" (including standing
astern and ahead looking at the verticality of the keel and rudder through a
grid drawn on a clear sheet of plastic). Anyway the "dimple" is an
oval-shaped flat spot in the curvature of the hull, about 9" high by 6" wide,
on the port side only, in the vicinity of the chainplate, centered some 12"
above the waterline. You can see it pretty well in this picture:
https://drive.google.com/open?id=0B-NqAxQ6JxFTQzlqNkNhR1djSmc. It's the dark
disruption in the reflections off the topsides. I'd welcome any opinions on
what this may be. I have no indication that part of the hull, or the
chainplate knee, is anything but completely solid and immobile. Nor do I have
any indication this blemish has any effect on the sailing characteristics of
the boat. Thanks in advance. Best Regards, Randy Stafford S/V Grenadine C&C
30-1 #7 Ken Caryl, CO
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