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Desolation of the Aftermath -
Andrew |
It is that time of year again,
a time we all really don't want to think much about because
it means some extra work for us.
The good news is that if you've been through
this drill once before, you've already got the hard part
out of the way because you will have already purchased the
necessary things you need, will already have your hurricane
plan fairly well thought out. If you're an old hand at hurricane
preparation, all you've really got to do is make sure the
needed equipment hasn't got misplace, and is readily at
hand. Plus reviewing your plan and making any adjustments
due to changing circumstances.
If you're a new boat owner, or perhaps
have never bothered with making comprehensive preparations,
yet alone a plan, perhaps this is the year you should do
so. In case you haven't noticed, we have been in a very
active period for these destructive storms, and the risks
are higher than normal. I've included some photos here that
you may find persuasive.
It's axiomatic that if you've never been
through a hurricane, it's very hard to appreciate how bad
a hurricane can really be. You've seen the pictures of the
tornadoes in Oklahoma recently. Well, multiply what you
saw there times a hundred or a thousand, and you'll get
an idea of what storms like Andrew and Hugo can do. Tornadoes
last a few minutes, at best. The duration of hurricanes
can last an entire day.
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| Feel the Power.
. . . that's a 12" x 26" steel reinforced
concrete header beam in the foreground from remains
of this CBS home. The problem with this house was
too many windows. The odd thing is the number of boats
that survived compared to homes that didn't. |
This new home was
just nearing completion when Andrew hit. Notice how
badly battered the galvanized steel storm shutters
are. If you want a roof to stay on, one might suggest
not building it with two-by-fours. Kinda stupid building
a CBS house with a roof like that. |
When it comes to hurricane protection,
there are two basic kinds of boat owners. One is the sort
who says, "The hell with it, the insurance will take
care of it." And then simply abandons the boat to its
fate. Our experience has revealed that there are quite a
lot of people with this attitude these days. If you are
the other sort, the type who wants to make every effort
to save his boat, you want to be sure that your boat isn't
near a boat owned by that sort. Why is that so? Mainly because
the majority of damage caused to boats is the result of
one boat breaking loose and causing damage to others. In
fact, just one boat breaking loose can wreck three, four,
five or more boats.
I start with this point since, whether
you're a novice or a seasoned salt, it's a good idea to
review your dockage situation and make an assessment, not
only of your marina, but of what kind of people have their
boats docked around you. Ask yourself questions like whether
you know your dock neighbors, and whether these people are
going to take appropriate measures, or will they merely
abandon their boats, possibly allowing them to destroy yours.
All good hurricane plans involve consideration
of the security of your marina or dock location. And in
order to make a good plan, you need to know something about
these storms, how they behave, and what their affect will
be on your location depending on the direction approach,
strength and forward speed. In other words, in order to
develop a good plan, you need to educate yourself. If you
haven't already done so, now is the time to begin.
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| So you'd like a
beach front home, huh? Insurance didn't cover the
cost of digging this canal out, filled in by storm
surge. Opal, 1995. |
Your boat stands
almost no chance in a dry storage building above Category
2. Note how the building was completely denuded of
all its steel siding before it toppled over. |
After nearly two decades of studying the
after effects of hurricanes, I have concluded that it is
possible, with knowledge and preparation, that the majority
of boats in a strike zone can survive a hurricane with minimal
damage. In fact, around 50% of all the boats in the way
of hurricane Andrew survived. Now that was a storm with
sustained 160 mph winds and microbursts up to 200.
So destructive was this storm that we are still arguing
about its strength to this day, since no instruments survived
to prove how high the winds really were.
I have added a couple of photos from my
Hurricane Andrew collection showing the devastation to land
structures. The point of interest here is that, for the
most part, the boats generally fared better than structures.
The primary reason is that structures are rigid, while boats
are not. Boats have a better chance of surviving than many
people might think.
The number one factor for survivability
is the vulnerability of your marina or dock location. This,
more than anything, determines the probability, so let me
relate the tale of three marinas, Diner Key, Black Point
and Coco Plum. All three of these marinas fell within the
eye of Andrew, and all three fronted directly on the coast
of Biscayne Bay. However, the astounding lesson learned
from these three marinas results from this: nearly all the
boats at Diner Key and Black Point were destroyed, while
at Coco Plum, not only was not one single boat
lost, but no boats even sustained severe damage.
Incredible but true.
Was that pure luck? Sort of like in tornadoes
where one house is flattened, but the house next door hasn't
so much as a shingle lifted? Absolutely not. Coco Plum survived
with minimal damage due to several factors that protected
the boats from high winds, storm surge, and waves. The reasons
for survival or destruction were these:
- Diner Key Marina was directly exposed to the bay and
ocean. It also had wooden docks that were destroyed,
as well as the fact that most docks were perpendicular
to the wind and wave direction. The boats in this marina
didn't have a chance. Most were smashed to pieces.
- Black Point had concrete docks, but these docks were
quite low to the water, very short stub piers.
They also had lousy pilings, most of which consisted
of 4" x 6" boards lag bolted to the concrete.
Needless to say, all these faux pilings broke
loose. But worse, the marina had little protection from
direct wave action from the bay. And with all the boats
docked perpendicular, or broadside to wind and waves,
these boats didn't have a chance either. Ninety percent
were destroyed.
- The saving features of Coco Plum were these: The concrete
docks were high, had 12" driven pilings four-cornering
each slip, plus the slips were extra wide, providing
plenty of room for boats to rise and fall with long
dock lines. Equally important were the factors that
the slips were nearly all parallel to the wind and wave
direction so that no boats were broadside to the storm.
Finally, the marina had a very wide buffer zone
of mangroves in front of it that knocked down the wave
action from the bay.
In other words, Coco Plum had ALL the necessary
features to provide maximum protection, while the features
of other two were all working against them. Obviously, marinas
that have all the favorable factors are going to be far
and few between, but at least my little description here
will give you some idea of the things to look for. If your
marina or dock location is badly exposed, along with having
poor docks and pilings, you must relocate your boat if you
want it to survive. Equally obvious is the fact that direct
coastal frontages offer the greatest threat, so that you
ought to be casting your eyes toward inland refuges unless
you just happen to have one of those ideal marinas.
Here are some additional tips:
- Determine what is the most common direction of storm
approach, and what is the wind direction likely to be.
For nearly all of the Gulf and south Atlantic coasts
(except Florida west coast), this is likely to be from
east to southerly. Spend some time learning how direction
of storm approach affects the wind direction. Understand
the rotating winds of the storm and how they will affect
you depending on where the storm goes. One of the better
ways to do this is to cut out a hurricane shape from
a piece of paper, and then play around with it on a
chart. Spend a mere 30 minutes doing this and you'll
learn a lot.
- Keep an eye on the weather, especially from August
1 through October. If you're an Internet user, by far
the easiest way to do this is to got to The Weather
Channel (weather.com), maps>satellite photos>Caribbean.
Bookmark this site and go to it every day during the
peak of the season. We don't recommend that you rely
on the local news as it is often late in reporting storm
development. Plus you don't have to get in front of
the TV at a specific time. During peak season, I check
the satellite photos twice per day, even more when there's
a lot of activity.
- The further inland you can go the better, so long
as you're not likely to get trapped in a traffic jam.
Far inland treks must be planned well in advance.
- Fight or flight. If you're going to flee the storm,
be sure that you have adequate time to do so, and that
you're not likely to flee directly into a sudden change
in storm direction. It is advisable to move your
boat a long distance ONLY to seek a better refuge in
the event that you do not have good refuges nearby.
Simply trying to flee the storm to get away from it
often proves disastrous. Where the storm will ultimately
go ashore is too unpredictable.
- Look for canals that do not immediately open onto
large bodies of water. Canals that are parallel to coastlines
are more secure than canals that are perpendicular to
coastlines. Give this a little thought and you should
have no trouble understanding why. A canal or river
that is parallel to wind and wave direction will suffer
the full effects of the storm.
- Determine the likely level of storm surge for your
area. You should know this based on historical records
since this is highly dependent on the nature of the
coast line. With this in hand, consider what's going
to happen with that amount of water over your dock.
Is you dock designed in such a way as that your boat
can survive this, or will it force you to relocate?
- Arrange your storm refuge in advance. I have determined
that in most areas of the southeast, there are more
than adequate storm refuges available, and that few
of these are ever taken advantage of. However, they
do take a bit of time in searching them out. Just keep
in mind that once you've found yours, usually you can
keep coming back to it year after year. All you have
to do is renew your agreement with the property owner
annually, so that in future years this will be of little
burden to you.
Perhaps the most important thing I learned
from Andrew was that how well the boat owner understood
hurricanes was the single most important factor. The area
of south Miami where Andrew struck is notable for its lack
of good storm refuge. Much of south Dade county is all coral
rock, so there are very few man-made canals. However, the
fact that a high percentage of the population were Cuban
Americans, people who were born and raised in the Caribbean,
meant that these people generally had a higher than average
understanding of these storms. The application of this knowledge
is what accounted for the high survival rate.
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| Blackpoint Marina
was notable for the complete destruction of nearly
all the boats in it. Bad exposure, poor orientation,
and narrow slips with a minimal number of pilings
is mainly to blame. |
One of my favorites:
the name on the side of this sail boat, which nearly
ended up in the swimming pool, is "NORM L SAILING".
Perhaps normal before the storm, but not after. The
lack of dock pilings on this canal was responsible
for most of the boat damage. There was nothing substantial
to moor too. Otherwise, most of the boats would have
survived with little damage. |
I attribute that factor as the main reason
that 50% of the boats and yachts survived, a number that
is quite high considering the devastation that storm produced,
and the relative lack of good refuge. Compared to much weaker
storms such as Opal, that survival rate is extraordinary,
indeed.
The bottom line is that if you want your
boat to survive, and are willing to devote a bit of time
toward understanding how to achieve survival, you stand
a better than 90% probability of success.
Finally, the reason we place so much stress
on having a plan and making preparations early has to do
with last minute panic. Here in south Florida, we've had
a lot of false alarms. In years with weak or only moderately
strong storms threatening, there was a lot of complacency,
and so you think you know what it's going to be like because
no one really panics. Well, let me tell you that when you've
got a Category 5 storm bearing down on you, everything changes.
An entire city living in fear and on the verge of panic
is not a pretty sight, what with all those people out there
on the roads and in the stores making last minute preparations.
Trust me, you do not want to be one of them.
The time to prepare is now.
See also; Safe
Harbor
Posted May 27, 1999