Gear failures & fixes—Rigging
and Sails
GMT mast
Okay, this is a big one and to fully
understand it will take you a lot of
reading. But, if you are contemplating a
major custom project, such as a new mast or
even a new boat, the time expended here may
save you a lot of money and aggravation. We
made a lot of mistakes on this one that you
definitely don’t want to emulate. We have
listed the lessons we learned at the end and
have marked the text at the points where we
learned each lesson.
If you don’t feel like reading more than 4000
words to find out what happened, just skip to the
Outcome and
Lessons Learned sections, which alone could
save you a bundle.
To keep the length of this just a little shorter
than War and Peace, we have not included the
supporting reports in the body of the text, but
they are available by clicking on the underlined
links. |
The Problem:
When we got to North America in the fall of 2003,
our aluminum mast was on its last legs after
130,000 miles of sailing, much of it tough; so we
added a new mast to the to-do list for the full
refit we were planning. Originally, our thought
was to just buy another aluminum tube and transfer
the gear and rigging, but after some research it
became obvious that there were some real
advantages to going with carbon fiber:
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For boats our size, the price difference is no
longer that great when compared to the potential
increase in resale value of the boat.
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Greater stability and resistance to capsize.
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Reduced pitching.
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The potential to build a far stronger mast than would be possible in aluminum.
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Increased stiffness, reducing the need for running
back stays in all but heavy winds and seas.
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Our first step was to consult with Jay Maloney of
Maloney Marine Rigging in Booth Bay, Maine. Jay
has been doing our rigging work for 15 years and
we have a huge amount of respect for his skills
and integrity (see
Stuff that works.)
After receiving a high estimate from Offshore
Spars, Jay advised us to focus on GMT Composites
of Bristol, Rhode Island, suggesting that as a
smaller custom shop they would be more focused on
our needs and probably cheaper than a big outfit
like Hall Spars or Offshore Spars. We
agreed. Lesson #1.
We visited GMT Composites and spent several hours
going over our needs for a bombproof and simple
mast for high latitude sailing with Will Rogers,
salesman, and David Schwartz, chief engineer and
CEO of GMT. We also presented a multi
page
specification, which was to be part of the
agreement between the parties.
After several weeks of negotiation we agreed a
price and sent in our deposit based on the
GMT
Composites proposal. A few days after that Will
Rogers sent us GMT Composites’
standard contract.
This was the first time we had seen or heard
anything about this contract, which was in our
opinion very one-sided in GMT Composites’ favor
and sent after GMT Composites had solicited and
accepted our deposit. We refused to sign the
agreement because:
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In the event of a warranty repair after sea
trials (undefined term) we would be responsible
for un-stepping the mast, shipping it back to GMT
Composites, shipping it back to the boat and
re-stepping it. Under this clause even a small
warranty repair could cost us thousands.
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We were required to pay GMT Composites the entire
amount prior to shipping but 100% of title would
remain with GMT Composites until the mast left
their plant.
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The agreement stated that it was the entire
agreement between the parties, effectively making
our specification and the GMT Composites proposal
meaningless.
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In the end it was agreed that we would not sign
the agreement and that the GMT Composites proposal
and our specification would constitute the
agreement between the parties. Lesson #2.
We were somewhat comforted by the article about
our new mast in Carbonics, GMT Composites’ news
letter, that stated: “…Phyllis Nickel and John
Harries...are committed to high latitude short
handed sailing and [Morgan's Cloud's] new carbon mast will be
designed to take anything Mother Nature sends her
way...”
At least, we thought, GMT Composites clearly
understood and were committed to building us a
mast that we could have confidence in, even in the
most extreme conditions in the high
latitudes. Lesson #3.
We were also comforted by our assumption that GMT
Composites was part of Eric Goetz Custom Boats who
have a great reputation (including a very positive
experience related to us by a friend) for making
problems right. Lesson #4.
The design phase progressed over several weeks
with David Schwartz being flexible and appearing
to listen to and incorporate our needs and
requests.
We assumed that all was well until we made a visit
of inspection to GMT Composites and found a whole
list of worrisome problems, the worst being that
the storm trysail track ended where the technician
discovered that he could not bend it around a
winch. Worse still, it was attached to the mast
with no backing plate through just .16” of carbon.
David Schwartz assured us, with the help of
graphs, that the storm trysail attachment was
adequate, despite the fact that both the mainsail
and spinnaker pole tracks had backing plates. Even
though we were not convinced, the mast looked
beautiful in its brand new coat of Allgrip and we
wanted to go sailing. Meetings were held and
compromises made, we were assured that if there
were any problems GMT Composites would stand
behind their product, and so we paid the full
amount. Lesson #5.
The mast was shipped to Maine and we started to
rig it. Very soon it became apparent that the
technicians who put it together had made a lot of
mistakes: Halyard messengers were not just
tangled, but knitted; wires were mislabeled; nylon
sheaves were ground to fit and installed complete
with grinding debris; and on and on. We spent two
days correcting as many of these errors as we
could and documented them on the
first defect
list.
Jay Maloney arrived for the stepping and in it
went. Immediately a glaringly obvious new problem
became apparent: The spreaders were out of line
with each other and the shrouds. And not just a
little. We were to find out later that the port
lower spreader was over 11” further forward than
the starboard one. From abeam poor Morgan’s Cloud
looked like a car that has had a smash and not
been repaired properly.
Now think about this for a moment: The best
parallel I can come up with is buying a brand new
luxury car (the price is about the same) and
finding that the chassis is bent.
Jay Maloney called David Schwartz at GMT
Composites and suggested quite forcefully that he
needed to come and have a look, which he did,
bringing a technician with him. David spent two
hours checking the mast and finally stated that it
was a trivial problem of misaligned spreaders that
could be fixed in the fall and that the boat was
safe to sail. He later billed us $4138 for this
visit. We did not pay it.
We were worried and upset, but GMT Composites had
our money. It was either take their word for the
safety of the mast or write off the season. David
Schwartz assured us once again that he would stand
behind his product. We went sailing and
circumnavigated Newfoundland. On that cruise of
some 3000 miles, other problems surfaced and we
made a
second defect list.
We submitted the list to David Schwartz, who
dismissed most of our concerns and suggested fixes
to many of the others that we were less than happy
with. Now what? Finally we suggested arbitration.
We would split the cost of an independent survey
and recommendations would be binding on both
parties. David accepted in principle, but only if
the surveyor was someone from a list of three that
he submitted.
Though neither Jay nor we were totally comfortable
with this scenario, we finally agreed to
appoint Chuck Poindexter, owner of Sound Rigging,
in Essex, Connecticut, a rigger from David’s
list. Lesson #6. Chuck stated that he could do an
adequate survey with the mast in the boat.
Lesson
#7. He came to Maine and spent about four hours
inspecting the mast including going up it in a bosun’s chair. David Schwartz of GMT Composites
and I both made submissions to Chuck and then
counter-submissions. Chuck completed his
report,
which basically stated that the mast was OK with
some small defects. We were not happy but had to
abide by it.
Now that Chuck had assured us that all was
fundamentally well with the mast, our biggest
concern was the lack of a backing plate for the
storm trysail track, which he had given a pass to.
I spoke with an old friend who is one of the most
experienced composite boat builders in the world
and has also been involved in the building of
masts for the Americas Cup Class. He stated that
there was no way that the attachment was adequate.
We decided to fix the things we were not happy
with in Chuck’s report at our own expense and
get on with our lives. (Poindexter did admit in a
later
e-mail that he might have been wrong about
the track fastening.)
Our next challenge was to get the spreaders on
straight. Since GMT Composites had made such a
large error when building the mast, we had no
confidence in their ability to fix it. So Jay
Maloney and I came up with a simple way to get the
spreaders set correctly using a laser transit and
a tool that I made from a set square. But with the
tool installed it soon became obvious that the
tube was twisted. Jay Maloney, with my assistance,
measured and
reported the twist at 7.8 degrees in
60’7” and we estimated that the total twist was
about 10 degrees from heel to cap.
Both Jay and I assumed that with this discovery
GMT Composites would either replace the mast or
give us our money back. David
Schwartz refused to do either, stating that the
mast was okay and
suggesting that he would pay to enlarge the
partners (hole in the deck) in our aluminum boat
so that the mast could be installed skewed to
compensate for the twist.
We rejected this solution on the grounds that it
was not reasonable to modify our boat that is
true to accommodate the mast GMT Composites built
that is twisted. He then stated that the best he
was willing to do was fill the holes in the
spreaders with weld bead and re-drill them to
compensate for the twist.
It was time to examine our options and get an
accurate idea what all this was going to cost us
before putting any more money and time into a mast
that we had lost confidence in.
We contacted Hall Spars, of Bristol, Rhode Island
and Composite Solutions of Hingham, Mass. Both
were interested in the project and visited the GMT
Composites mast. Both expressed surprise and
concern at the thin walls of the tube, echoing
doubts my boat builder friend, who had advised us
on the storm trysail track, had expressed. Now we
had a whole new set of worries. Maybe the basic
mast was inadequate.
However, obviously neither Hall Spars nor
Composite Solutions was exactly unbiased. We
clearly needed someone who knew carbon masts and
had no axe to grind. One name kept coming up: Dirk
Kramers, one of the most experienced carbon
composite engineers in the business. This is the
guy that figures out how to put the Alinghi
Americas Cup yachts together. We suspected that
we could not afford him, but his colleague, Steve Koopman, was willing to run the numbers on the mast
for a very reasonable $1500. It hurt to throw more
money at this mast, but we had to know. GMT
Composites agreed to share the necessary
information with Steve, although they did charge
us $400 to do so.
Steve Koopman filed his
report. On the surface,
the mast got a pass, but with some very worrying
qualifications, most notably:
“This approach gives a theoretically lighter
solution but results in a somewhat less robust
mast. We would not normally specify a tube with
the proportions of section size to wall thickness
that this mast features, but more extreme examples
have certainly been built. The tube laminate does
not exhibit the interleaving of off-axis fiber
that is commonly found in masts and that we would
specify in our designs. In addition, the laminates
are constant from top to bottom so are not
optimized weight-wise to the expected stresses in
the mast. The twist in the tube is a clearly
visible defect in the mast, but not likely to
cause it to fail. The items mentioned in this
paragraph are subjective and different spar
manufacturers and designs will end up with
different solutions.”
Our next problem was that, having repeatedly gone
on record as having reservations about the mast
and given Koopman’s qualifications in his report,
we had a legal and moral responsibility to share
the report with our insurance underwriters,
Pantaenius. Their technical department read the
report and rejected the mast stating:
“Whilst insurers have not examined physically the
mast provided by GMT they have had the benefit of
considering the report produced by SDK and taken a
view based upon its findings against what they
understand to be the intended use of the yacht
which is blue water cruising in geographical areas
where severe weather conditions are encountered
frequently. The insurers have considered the
evidence concerning the mast 'as designed' and not
'as built'. Whilst insurers are in broad agreement
with the findings contained in the SDK report
which is underpinned by Finite Element analysis
they consider that the factors of safety designed
into the mast are below that which they would be
prepared to accept as a reasonable insurance risk
when encountering the expected severe weather
conditions in remote areas. Insurers have taken
the view that the factors of safety designed into
this monolithic structure are more performance
orientated than they are comfortable with. In view
of this assessment and in relation to the
beneficial consequential loss cover afforded by
the Pantaenius Yacht Hull Clauses the potential
risk is not considered reasonable to the insurers
of Morgan's Cloud and consequently they are not
able to offer terms for insurance purposes.
The view of the insurers has not been influenced
by the apparent twist in the mast nor the novel
design however, when considered in relation to the
identified factors of safety these issues would
only serve to reinforce the perceived view that
the risk of failure and consequential damage is
higher than they would be comfortable with given
the intended use of the yacht.”
After reading Pantaenius’ position, Koopman of SDK
Structures came back with an
addendum to his
report.
The Outcome:
As so often happens in boats and life, things were
not as clear as we would have liked. Nonetheless,
after much thought, we decided to buy another new
mast, this time from Hall Spars. (Not an easy decision since we
were spending
capital that took a lot of years to accumulate and
that we got from the sale of our house.) Our
reasons were:
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The largest and most experienced insurer of
offshore sailboats in the world rejected the GMT
Composites mast for hard usage in the high
latitudes. As far as we know, Pantaenius are the
only company that will cover us for the kind of
sailing we do. Keeping this mast meant no
insurance cover.
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We had bought a new mast in the first place, not
to get better performance, although that was a
nice side effect, but to get peace of mind. It
wouldn't matter what we did in the future, the
problems with the GMT Composites mast would always
have us wondering what else might be wrong. Koopman only gave the mast a pass
'predicated on
the tube laminate being properly applied,
consolidated, and cured'. Was it? There was no way
to know. Neither of us wanted to spend the rest of
our cruising life looking up at a twisted mast and
wondering what else might be wrong.
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Both Hall Spars and Composite Solutions specified
masts for our boat that have much thicker walls,
albeit with smaller sections, than the GMT
Composites mast, before taking into account our
rough use. Koopman expressed reservations about
the thin wall, large diameter approach in his
report.
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Both Hall Spars and Composite Solutions use 45 and
90 degree off-axis laminates to bind the mast
together. I was informed by Hall that the
application of these off-axis laminates is the
most labor intensive part of the lay-up process.
GMT Composites only used a few 60 degree laminates
and did not interleave them between the vertical
laminates. Maybe that is okay, but why are Hall and
Composite Solutions taking these costly steps in
the highly competitive composite mast business? We
suspect they have good reasons.
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The day will come when we wish to sell Morgan’s
Cloud and the twisted GMT Composites mast with all
the question marks hanging over it will
undoubtedly reduce the value of the boat
substantially.
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Fixing the GMT Composites’ fitting attachments,
correcting the lead problems and fabricating four
new spreaders to compensate for the twist would
cost us many hours and several thousand dollars.
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The bottom line: We take our boat to hazardous
places and were not willing to trust our lives to
the mast built by GMT Composites.
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Lessons Learned:
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Get the right references and advice.
We have a huge amount of respect and personal
regard for Jay Maloney; however, we should not
have taken his recommendation of focusing on GMT
Composites without doing our own due diligence. At
the time, Jay had not installed many carbon masts.
We should have interviewed other riggers and boat
builders with more carbon fiber mast experience.
We need to make clear here that this was our
fault, not Jay’s. He was up front about his lack
of carbon mast experience. We would not hesitate
to recommend Maloney Marine Rigging. In fact
we
do. Also, Jay expended countless hours over 20
months trying to make this situation right that he
has never billed us for. Thank you, Jay.
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Stop the process when it first starts
to go wrong.
In future, if a company does something like only
showing their contract after they have received
our deposit, we will pull the order. No ifs, buts
or maybes; even if we are forced to forfeit our
deposit, we will walk. Despite agreeing to not
impose the standard contract, David Schwartz of
GMT Composites repeatedly cited its clauses when
things started to go wrong.
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Don’t be comforted by marketing
material.
We were comforted by the Carbonics quote, but news
letters are marketing tools. In the future we will
completely discount marketing hyperbole in our
selection process. Was the GMT mast capable of
“tak[ing] anything Mother Nature sends [its] way”?
We can’t know for sure, but Pantaenius doesn't
seem to think so.
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Do your due diligence.
Being comforted by assuming we were doing
business, however indirectly, with Eric Goetz was
stupid. A couple of phone calls would have told us
that GMT Composites and Eric Goetz had parted ways
well before we ordered our mast, leaving David
Schwartz as sole proprietor at GMT Composites.
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Don’t make the final payment until you
are really comfortable, no matter what it costs
you.
We should have refused to pay the final amount
once we became uncomfortable with the mast and GMT
Composites’ level of commitment to fix it to our
satisfaction. However, this is easier to say than
to do. We had already paid well over half of the
purchase price and a prolonged fight would have
cost us the sailing season and perhaps everything
we had in the mast. Still, we should have hung
tough. By letting our desire to go sailing
influence our decision we surrendered our last
vestige of control over the situation and became
completely dependant on David Schwartz’s
willingness to accede to our wishes.
This highlights a general problem in the marine
industry: 'No cash, no splash' has become the
standard. We, the customers, have in many, perhaps
most, cases surrendered our right to adequately
test custom products and work before making the
final payment on them. At the very least we should
insist on retaining clauses, like those common
with custom-built houses, in which the owner retains an
amount of money against defects for a reasonable
period. This amount could even be held in escrow
to prevent the customer from taking unfair
advantage of the vendor.
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Make sure any arbitrator is a qualified
surveyor, or better still, a qualified arbitrator.
Don’t use an industry insider.
On the surface, this one was really stupid. But on
the other hand, by this point we were basically
powerless. GMT Composites had all our money and
was not willing to make changes and repairs to the
mast to our satisfaction. David Schwartz would
only accept arbitration if the arbitrator came
from his short list. Basically, we had nothing to
lose.
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Don’t take the easy way out when you
know it is wrong.
Deep down, I knew that agreeing to have Chuck
Poindexter survey the mast in the boat was a bad
idea. It could be argued that it was Chuck’s
responsibility as the professional rigger to
reject surveying the mast in the water, but that
does not alter the fact that I succumbed to the
easy way out. If he had surveyed the mast out of
the boat, he could not have missed the twist.
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If you have experience, trust it.
Over and over again through this process I let the
professionals convince me that my gut feelings of
discomfort were unfounded. For example, when I
questioned the storm trysail track fastening,
David pulled out a graph showing fastening
strength into carbon and convinced everyone round
the table, including Ian McCurdy of McCurdy and
Rhodes, designer of Morgan’s Cloud, and Jay
Maloney, that it was okay to fasten our last line of
storm defense into less than 3/16” of carbon
despite the fact that carbon, by David’s own
admission, has about one half the screw holding
power of aluminum. I was uncomfortable, but I went
along with the professionals.
In deferring to the professionals, I completely
forgot that I have sailed more offshore miles than
all of the people around that table put together.
I forgot that I have been hands on maintaining
offshore sailing boats and fixing what breaks at
sea for 35 years. I should have remembered that. I
knew that fastening the track without a backing
plate was wrong, but I let my inability to say why
in engineering terms handicap me. (Incidentally,
my boat builder friend later gave me the
engineering facts that make David’s graph
incorrect when applied to the trysail track. They
are to do with cycle loading.)
The point is that if you are an experienced
offshore sailor and something looks wrong to you,
it probably is, even if you can’t articulate why.
Don’t let the professionals convince you otherwise
using engineering theory that may not apply to
your particular situation. Remember, they will be
at home in a nice warm bed when the item that made
you uncomfortable blows up in your face, probably
on a dark night when it is blowing like blazes.
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Don’t be reassured by the 'it has
worked on hundreds of boats in the past' argument.
Over and over again through the years marine
professionals have suggested that Phyllis and I
are unreasonable in demanding the level of
attention to detail and strength that we expect
for anything that goes on Morgan’s Cloud. This
frequently came up during the mast saga.
We constantly remind ourselves, particularly after
this experience (and you should too if you plan to
go offshore), that only a tiny minority of boats
actually go anywhere that really tests them. This
is particularly true on the eastern seaboard of
the USA where the conditions are generally benign.
Don’t believe me? Walk through a marina in England
or New Zealand and look at the boats. Look at how
much shorter the masts are. Look at how much
heavier the gear is relative to the size of the
boat. If you plan to go offshore, high latitudes
or not, don’t let the professionals talk you into
systems because they work for boats on Long Island
Sound or on a June trip to Bermuda every couple of
years.
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Last
edited on
Saturday December 01, 2007
Please read the following:
COPYRIGHT:
All information on this website is the copyright of John
Harries and/or Phyllis Nickel. All rights reserved.
FAIR USE: Notwithstanding the above, it is perfectly
acceptable for you to use quotes of a reasonable length from
this website, as long as you include an attribution with a link
to this website. DISCLAIMER:
Nothing on this website or in direct communications received
from us, or in our articles in the media, should be construed to
mean or imply that the high latitudes are anything other than a
hazardous place to take a boat. Dangers such as, but not limited
to, extreme weather, cold, ice, lack of help or assistance, and
poor charting could injure or kill you and wreck your boat.
Decisions to cruise the high latitudes, where you go, and how
you equip your boat, are yours and yours alone. The information
on this web site is based on what has worked for us in the past,
but that does not mean it will work for you, or that it is the
best, or even a good way for you to do things. |
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