Power Cats in the Pacific Northwest

C&
Candy & Gary
Wed, Jan 10, 2007 10:34 PM

I'd be interested in knowing (and I'm sure the rest of the forum too)
on how your cat handles the big North West weather and seas.
What are the practical limitations etc.

thanks Jonah.

Hmmm.  Not THAT Jonah I hope....  ( just jokin' with ya man)

As I have written here before, my PDQ is blessed with particularly
slender hulls, which makes it a little more prone to harmonic hobby
horse pitching than almost any other boat, even a tunnel hull power
cat.  So, I learned right away to change angle of attack to the wave
train or change my speed to find a happier boat motion when that
condition crops up.  I turn into and cross big wakes at a thirty to
forty five degree angle for similar reasons.  There is virtually no
pendular harmonic rolling -- the kind exemplified by a round bottomed
monohull in a beam sea.  A goodly swell on the beam does of course raise
one hull before reaching the other, but that motion is particularly slow
and gracefull.  For example offshore the far northwest tip of
Washington, heading north enroute the Straits of Juan de Fuca we had
been taking strong winds and seas in the six to fifteen foot range on
the port bow all the way up from Astoria.  Toward the end of this
northerly leg a goodly swell from the west set in, presenting twenty
footers at about sixteen seconds right on our port beam.  It looked
really scary, seeing what appeared to be a wall of water I couldn't see
the top of rushing toward the boat.  It was great fun to find that they
produced very little actual roll motion, mostly we felt the vertical
displacement as the big waves moved under the boat, and the wall of
water was then seen moving away from us on the other side.  I wouldn't
like to be in those swells close inshore where they get really steep and
could flip anybody a$$ over teakettle, but that's why I take my offshore
passages out far from land, shoal bottoms and crab trap floats rather
than in close ashore as some do.  We rounded the turn around Tatoosh
Island and heading east with these big guys behind us was no problem
either.  The period of these big ocean swells is nowhere near the
harmonic to my boat's motion, particularly with my boat speed added in,
so hobby horse pitching wasn't an issue.  I have never worked out how to
keep surfing very long on the downside of these waves as the wave
inevitably moves beyond me and I loose anything I gained going down
while struggling back up the next wave.  Heading into such wave systems
gives a considerable pitching motion just as the boat follows the
coutour of the water surface, but it takes a much faster wind driven sea
or chop to get the ol' hobby horse going.

The Pacific Northwest is world famous for rough water and weather, and
that reputation is well earned.  Not so obvious to the outsider perhaps
is that these dangerous conditions happen in predictable places and at
generally predictable times.  Most of us understand and deeply respect
the risks, and we find it is pretty easy to avoid those bad conditions.
The Columbia River bar is frequently a fierce destroyer of boats and
men.  It can also be fine and calm.  We watch the weather very carefully
and we study the tide/current tables.  We chat with the Coast Guard and
others, and in short, we plan to be there only when the conditions are
to our liking.

As with any boat, fuel comsumption goes way up in bouncy water and head
winds.  The power cat. particularly shines here too, as I have much
greater range of choice.  I can go faster than my monohull displacement
trawler buddies while just approaching their fuel consumption, and I can
approach the planing speeds of my speed freak friends and their planing
boats without being anywhere near as thirsty.  Or I can slow way down
and have fantastic range while still enjoying a comfortable ride.  I
have a much greater option of fast vs. slow/cheap/extended range.  That
effect produces an even greater difference in sheltered waters.

The Pacific Northwest has oodles of more or less sheltered water, the
Columbia/Willamette/Snake River system, Puget Sound, the San Juans, the
fabulous Canadian waters behind Vancouver Island, the Inside Passage,
etc. etc.; and the power catamaran particularly shines here with an
otherwise completely unavailable medely of very shoal draft, high fuel
efficiency, stable boat motion, ease of maneuvering and all the rest.
Excluding kayaks perhaps, we can go where just about any other kind of
boat can go, and some additional places are ours alone.

We also have very moderate marine dominated weather, although it is
correspondingly wet and cloudy much of the time.  My PDQ, with it's
bright, comfy, roomy interior and ability to stay cozy inside for
everything but line and anchor handling makes these sheltered waters
available year round.  I erred in only getting the heat pump/AC system
that works fine in all but the extreme conditions.  In the depths of
winter when I want heat the most and the water temp. is below 45
degrees, no heat can be pumped out of the cold water into my boat.
Likewise, in the heat of summer, in a shallow harbor the water
temperature can go high enough that the AC is hardly able to pump heat
out of the boat and into the water.  I should have gotten (and am having
retrofitted) a diesel heater system (I like the Hurricane from ITR) and
I am fixing better ventilation and fitting window awnings to keep the
sunshine from turning my boat into such a solar heated furnace.

In short, I feel that the Pacific Northwest is the best place for me to
be and I also feel independently that my PDQ is the best boat for my
kind of boating.  No surprise that I feel that the PDQ, and power
catamarans in general are the best boat for this region.  The only
downside is that there are only now a couple of west coast produced
power cats becomming available, and those are firmly in the high speed,
high power tunnel hull style -- while my favorite, (the PDQ of course)
costs a bunch extra to get to the left coast.

Gotta get back to work again,

Gary Bell

I'd be interested in knowing (and I'm sure the rest of the forum too) on how your cat handles the big North West weather and seas. What are the practical limitations etc. thanks Jonah. Hmmm. Not THAT Jonah I hope.... ( just jokin' with ya man) As I have written here before, my PDQ is blessed with particularly slender hulls, which makes it a little more prone to harmonic hobby horse pitching than almost any other boat, even a tunnel hull power cat. So, I learned right away to change angle of attack to the wave train or change my speed to find a happier boat motion when that condition crops up. I turn into and cross big wakes at a thirty to forty five degree angle for similar reasons. There is virtually no pendular harmonic rolling -- the kind exemplified by a round bottomed monohull in a beam sea. A goodly swell on the beam does of course raise one hull before reaching the other, but that motion is particularly slow and gracefull. For example offshore the far northwest tip of Washington, heading north enroute the Straits of Juan de Fuca we had been taking strong winds and seas in the six to fifteen foot range on the port bow all the way up from Astoria. Toward the end of this northerly leg a goodly swell from the west set in, presenting twenty footers at about sixteen seconds right on our port beam. It looked really scary, seeing what appeared to be a wall of water I couldn't see the top of rushing toward the boat. It was great fun to find that they produced very little actual roll motion, mostly we felt the vertical displacement as the big waves moved under the boat, and the wall of water was then seen moving away from us on the other side. I wouldn't like to be in those swells close inshore where they get really steep and could flip anybody a$$ over teakettle, but that's why I take my offshore passages out far from land, shoal bottoms and crab trap floats rather than in close ashore as some do. We rounded the turn around Tatoosh Island and heading east with these big guys behind us was no problem either. The period of these big ocean swells is nowhere near the harmonic to my boat's motion, particularly with my boat speed added in, so hobby horse pitching wasn't an issue. I have never worked out how to keep surfing very long on the downside of these waves as the wave inevitably moves beyond me and I loose anything I gained going down while struggling back up the next wave. Heading into such wave systems gives a considerable pitching motion just as the boat follows the coutour of the water surface, but it takes a much faster wind driven sea or chop to get the ol' hobby horse going. The Pacific Northwest is world famous for rough water and weather, and that reputation is well earned. Not so obvious to the outsider perhaps is that these dangerous conditions happen in predictable places and at generally predictable times. Most of us understand and deeply respect the risks, and we find it is pretty easy to avoid those bad conditions. The Columbia River bar is frequently a fierce destroyer of boats and men. It can also be fine and calm. We watch the weather very carefully and we study the tide/current tables. We chat with the Coast Guard and others, and in short, we plan to be there only when the conditions are to our liking. As with any boat, fuel comsumption goes way up in bouncy water and head winds. The power cat. particularly shines here too, as I have much greater range of choice. I can go faster than my monohull displacement trawler buddies while just approaching their fuel consumption, and I can approach the planing speeds of my speed freak friends and their planing boats without being anywhere near as thirsty. Or I can slow way down and have fantastic range while still enjoying a comfortable ride. I have a much greater option of fast vs. slow/cheap/extended range. That effect produces an even greater difference in sheltered waters. The Pacific Northwest has oodles of more or less sheltered water, the Columbia/Willamette/Snake River system, Puget Sound, the San Juans, the fabulous Canadian waters behind Vancouver Island, the Inside Passage, etc. etc.; and the power catamaran particularly shines here with an otherwise completely unavailable medely of very shoal draft, high fuel efficiency, stable boat motion, ease of maneuvering and all the rest. Excluding kayaks perhaps, we can go where just about any other kind of boat can go, and some additional places are ours alone. We also have very moderate marine dominated weather, although it is correspondingly wet and cloudy much of the time. My PDQ, with it's bright, comfy, roomy interior and ability to stay cozy inside for everything but line and anchor handling makes these sheltered waters available year round. I erred in only getting the heat pump/AC system that works fine in all but the extreme conditions. In the depths of winter when I want heat the most and the water temp. is below 45 degrees, no heat can be pumped out of the cold water into my boat. Likewise, in the heat of summer, in a shallow harbor the water temperature can go high enough that the AC is hardly able to pump heat out of the boat and into the water. I should have gotten (and am having retrofitted) a diesel heater system (I like the Hurricane from ITR) and I am fixing better ventilation and fitting window awnings to keep the sunshine from turning my boat into such a solar heated furnace. In short, I feel that the Pacific Northwest is the best place for me to be and I also feel independently that my PDQ is the best boat for my kind of boating. No surprise that I feel that the PDQ, and power catamarans in general are the best boat for this region. The only downside is that there are only now a couple of west coast produced power cats becomming available, and those are firmly in the high speed, high power tunnel hull style -- while my favorite, (the PDQ of course) costs a bunch extra to get to the left coast. Gotta get back to work again, Gary Bell