John, Tim and Barbara,
This is a very important topic which I am actively debating ( with myself )
in fact I just sent a note to Scott Bulger to elicit his opinion
about the "necessity" of dry exhaust on a coastal cruiser. I was wishing
American Tugs could be ordered with a Lugger, dry exhaust and a Nordhavn
gravity fuel system. The gas powered boats I've owned were always having
trouble with the exhaust risers and it seems like a good idea in the long
run to keep salt water away from your metal engine parts. The fishermen have
been using dry exhaust for decades, altough I have heard it argued that
this was merely the cheaper way to go. However, this would seem not to be
the case with a yacht. I best order the article and read what Dave Gerr has
to say. I am interested in your experiences too.
Thank-you
David E.
Poulsbo/Keyport, Wa.,
Currently in Glendale, Az.,
On Thu, Feb 19, 2009 at 10:19 AM, John Marshall johnamar1101@gmail.comwrote:
I stand corrected Tim.
Perhaps the various wet exhaust boats I've been on didn't handle the
exhaust correctly, but I could always smell a bit of burned diesel,
especially with a following or quartering wind. (But none of them were
wet-exhaust Nordhavns). Given we're pretty slow, the wind is often
blowing from the back.
Or maybe I'm just hyper-sensitive to the fumes.
John
On Feb 19, 2009, at 10:00 AM, Tim Johnson wrote:
I take exception to John Marshall's comment re the
"uninhabitability" of the cockpit on wet exhaust boats. I've owned
six wet exhaust boats of various types. Those with the exhaust
exiting the stern through a flat transom can suffer from the
"station wagon" effect at higher speeds, resulting in exhaust fumes
being sucked back into the cockpit. This can be unpleasant. On my
last two boats, a Nordhavn 57 and 64, the exhaust exits at the aft
starboard corner through an outlet that is underwater at about six
knots. The exhaust is thus swept back behind the boat and does not
come into the cockpit. There is no exhaust odor in the cockpit.
The wet vs. dry debate is endless. For a thorough discussion of the
issue, I suggest Dave Gerr's article in the February/March and April/
May 2008 issue of Professional Boat Builder: After weighing the
plusses and minuses of each choice, Gerr concludes: "[M]y
preference is for wet exhaust on yachts and most small passenger
vessels. I think the majority of boat owners will be happier
living with a wet exhaust."
Tim Johnson
M/V CLAIRBUOYANT
Nordhavn 64 #06
tim@timandclair.com
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We have just done 4000 miles in our first year on a Nordhavn 62 with a wet
exhaust and have never had any smell/problems related to it at all.
Certainly keeps the roof of the pilothouse cleaner!
Steve H
On 2/19/09 2:07 PM, "David Evans" highpressure@gmail.com wrote:
John, Tim and Barbara,
This is a very important topic which I am actively debating ( with myself )
in fact I just sent a note to Scott Bulger to elicit his opinion
about the "necessity" of dry exhaust on a coastal cruiser. I was wishing
American Tugs could be ordered with a Lugger, dry exhaust and a Nordhavn
gravity fuel system. The gas powered boats I've owned were always having
trouble with the exhaust risers and it seems like a good idea in the long
run to keep salt water away from your metal engine parts. The fishermen have
been using dry exhaust for decades, altough I have heard it argued that
this was merely the cheaper way to go. However, this would seem not to be
the case with a yacht. I best order the article and read what Dave Gerr has
to say. I am interested in your experiences too.
Thank-you
David E.
Poulsbo/Keyport, Wa.,
Currently in Glendale, Az.,
On Thu, Feb 19, 2009 at 10:19 AM, John Marshall johnamar1101@gmail.comwrote:
I stand corrected Tim.
Perhaps the various wet exhaust boats I've been on didn't handle the
exhaust correctly, but I could always smell a bit of burned diesel,
especially with a following or quartering wind. (But none of them were
wet-exhaust Nordhavns). Given we're pretty slow, the wind is often
blowing from the back.
Or maybe I'm just hyper-sensitive to the fumes.
John
On Feb 19, 2009, at 10:00 AM, Tim Johnson wrote:
I take exception to John Marshall's comment re the
"uninhabitability" of the cockpit on wet exhaust boats. I've owned
six wet exhaust boats of various types. Those with the exhaust
exiting the stern through a flat transom can suffer from the
"station wagon" effect at higher speeds, resulting in exhaust fumes
being sucked back into the cockpit. This can be unpleasant. On my
last two boats, a Nordhavn 57 and 64, the exhaust exits at the aft
starboard corner through an outlet that is underwater at about six
knots. The exhaust is thus swept back behind the boat and does not
come into the cockpit. There is no exhaust odor in the cockpit.
The wet vs. dry debate is endless. For a thorough discussion of the
issue, I suggest Dave Gerr's article in the February/March and April/
May 2008 issue of Professional Boat Builder: After weighing the
plusses and minuses of each choice, Gerr concludes: "[M]y
preference is for wet exhaust on yachts and most small passenger
vessels. I think the majority of boat owners will be happier
living with a wet exhaust."
Tim Johnson
M/V CLAIRBUOYANT
Nordhavn 64 #06
tim@timandclair.com
http://lists.samurai.com/mailman/listinfo/passagemaking-under-power
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UNSUBSCRIBE and nothing else in the subject or body of the message.
Passagemaking Under Power and PUP are trademarks of Water World
Productions, formerly known as Trawler World Productions.
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--- On Thu, 2/19/09, Brian Smyth brian.smyth@ns.sympatico.ca wrote:
From: Brian Smyth brian.smyth@ns.sympatico.ca
Subject: Re: [PUP] Selen or Kadey Krogen?
To: "'Tim Johnson'" tim@timandclair.com, "'John Marshall'" johnamar1101@gmail.com
Cc: "'Barbara Wilkinson'" xbrit@charter.net, passagemaking-under-power@lists.samurai.com
Date: Thursday, February 19, 2009, 6:04 PM
Hi Tim,
We build almost exclusively wet exhausts, and you are absolutely right! We
have delivered boats long distances and fine the boats very clean on
arrival. I also think wet exhausts are less expensive to build, and if an
exhaust separator is used, they are really clean and quite!
Brian
Yachtsmiths International
-----Original Message-----
From:
passagemaking-under-power-bounces+brian.smyth=ns.sympatico.ca@lists.samurai.
com
[mailto:passagemaking-under-power-bounces+brian.smyth=ns.sympatico.ca@lists.
samurai.com] On Behalf Of Tim Johnson
Sent: Thursday, February 19, 2009 2:01 PM
To: John Marshall
Cc: Barbara Wilkinson; passagemaking-under-power@lists.samurai.com
Subject: Re: [PUP] Selen or Kadey Krogen?
I take exception to John Marshall's comment re the
"uninhabitability"
of the cockpit on wet exhaust boats. I've owned six wet exhaust boats
of various types. Those with the exhaust exiting the stern through a
flat transom can suffer from the "station wagon" effect at higher
speeds, resulting in exhaust fumes being sucked back into the
cockpit. This can be unpleasant. On my last two boats, a Nordhavn 57
and 64, the exhaust exits at the aft starboard corner through an
outlet that is underwater at about six knots. The exhaust is thus
swept back behind the boat and does not come into the cockpit. There
is no exhaust odor in the cockpit.
The wet vs. dry debate is endless. For a thorough discussion of the
issue, I suggest Dave Gerr's article in the February/March and April/
May 2008 issue of Professional Boat Builder: After weighing the
plusses and minuses of each choice, Gerr concludes: "[M]y preference
is for wet exhaust on yachts and most small passenger vessels. I
think the majority of boat owners will be happier living with a wet
exhaust."
Tim Johnson
M/V CLAIRBUOYANT
Nordhavn 64 #06
tim@timandclair.com
http://lists.samurai.com/mailman/listinfo/passagemaking-under-power
To unsubscribe send email to
passagemaking-under-power-request@lists.samurai.com with the word
UNSUBSCRIBE and nothing else in the subject or body of the message.
Passagemaking Under Power and PUP are trademarks of Water World Productions,
formerly known as Trawler World Productions.
http://lists.samurai.com/mailman/listinfo/passagemaking-under-power
To unsubscribe send email to
passagemaking-under-power-request@lists.samurai.com with the word
UNSUBSCRIBE and nothing else in the subject or body of the message.
Passagemaking Under Power and PUP are trademarks of Water World Productions,
formerly known as Trawler World Productions.