[PUP] Selen or Kadey Krogen?

[John Marshall]

Tks, Milt. Good advice from someone who has been there and done it.

When I go back and think about it, my underway bad experiences are
with boats with transom exhausts. The side-exhaust is apparently a
much better approach.

My only experience there is with my side-exhaust wing engine due to
the wind angle, but that exhaust is well forward, just aft of the side
boarding door. A main engine exhaust would not be that far forward.

So thanks to several replies, I stand corrected. My negative
experiences with wet exhaust don't reflect the way Nordhavn and
possibly others build wet exhausts, and are more reflective of
Bayliner-grade boats, which is where I got turned off to it.

John Marshall


On Feb 19, 2009, at 6:20 PM, Milt Baker wrote:

> I find myself nearly always agreeing with John Marshall whose
> reasoned,
> intuitive approach to boatkeeping and whose literate, articulate posts
> resonate very well with me.  This time, however, I have to say I
> think John
> missed the boat.
>
> Like Tim, I've owned a half-dozen wet exhaust boats over several
> decades and
> have rarely had a problem with an inhabitable cockpit due to
> exhaust. The only
> time a problem arises, it seems, is when the wind is from abraft the
> beam
> (don't you love that phrase?!) at greater than the yacht's speed,
> and on the
> rare occasion when that occurs it's usually easy to alter course to
> give the
> cockpit party clear air.
>
> My Nordhavn 47 is the only one (so far!) with wet exhaust, and
> there's no way
> I'd trade it for a dry stack boat.  The fine folks at PAE told me a
> dry stack
> boat was the way to go, but I persisted and ended up with a great
> wet exhaust
> boat and have not looked back.  Over 18,000 miles in 4 years,
> including an
> ocean-crossing and a lot of putt-putting along various coasts in
> Europe, the
> Caribbean, the Bahamas, and the USA, I have yet to have a problem of
> consequence from my wet exhaust system.  If I were ordering a new
> yacht of any
> kind today there's no question that I'd spec wet exhaust.
>
> Tim's right: having the exhaust exit the boat on the quarter all but
> eliminates exhaust problems in the cockpit.  He's right again that
> the wet vs.
> dry debate goes on and on.  There is no single right answer.  I
> admit it's
> best to be less dogmatic than I am on the subject.
>
> Something I like very much about our cruising/yachting lifestyle is
> that there
> are no absolute answers on questions like this.  There's every bit
> as much
> evidence supporting dry stack as wet exhaust, and it all comes down
> to what
> you prefer--or, perhaps more important, what you have experience
> with.  I
> prefer wet exhaust because that's where my experience lies, and a
> dry stack
> boat ain't likely to be in my future.
>
> But you never know!
>
> --Milt Baker, Nordhavn 47 Bluewater, Fort Lauderdale
>
> Tim 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."
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