Handout of MarQuip's presentation at Enviro Yacht 2009. You can contact us at info@marquip.nl or visit our website at www.marquip.nl

1. Enviro Yacht 2009 MarQuip
Professionals in
exhaust solutions
www.MarQuip.nl
Designing green exhaust systems is a balance act
that have to be taken into All of them require there own
Along with a changing
account for engineering an solution and take a bite out of the
climate, the demand for green efficient exhaust system. available space and budget.
yachts is on the rise.
Noise attenuation, cooling If you are looking for an
More and more authorities the exhaust gas, maximum back optimal green exhaust system, it
are rejecting “ dirty” yachts out pressure values and available is in our opinion wise to go to a
of there harbors. They prefer space are all very important professional exhaust system
yachts that will not pollute the parameters. supplier with experience in green
water and air in the harbor. exhaust systems.
And then the exhaust system
Yacht owners on the other must also fit inside budget,
hand are also becoming more and regulations and time schedule.
more aware of the advantages of All these subjects interact with
having a so called “green” yacht. each other and influence the
outcome of the design.
MarQuip, well known for
delivering exhaust systems to Therefore it must not be a
over 125 Super yachts so far , is surprise that designing a green
an expert on designing green exhaust system is all about
exhaust systems. making the right choices to come
to the optimal design.
Designing a green exhaust
system can be quite a challenge. Especially if you take a look
lorem ipsum dolor met set at all the different ways of
Next to cleaning the exhaust
emission reduction.
gas there are a lot of other points
MarQuip B.V., Staalindustrieweg 5a, 2952 AT, Alblasserdam. The Netherlands,
tel: +31 (0)78 681 09 75 email:info@marquip.nl

2. “..in general to go “green”
I suggest installing a
generator exhaust with
soot filter, a catalytic
converter, and a
silencer/separator.”
Holger Hamann,
TYR, July/Aug 2007
The “greenest” exhaust system now available by Marquip
Tips for exhaust refits
Above right you see a picture of a recent exhaust system we have
delivered in full for two yachts in Italy. Next to the underwater exhaust
system for the main engines you can see three generator exhaust systems. 1. Be early
Two of theme are very green systems. One on starboard side and one on port It is imperative to contact us
side. well in time before the yacht
arrives at the yard. Our
From the engine outlet, the exhaust gas goes directly into a silencer with
engineers are very creative in
an integrated catalytic converter. By using the silencer we can guarantee
finding space for all the new
proper noise attenuation. From there we go to a soot trap with an automatic
components. And to fit
burner, a Nauticlean® by HUG engineering, with the possibility to bypass
everything, we need your
the Nauticlean®. information before we can
make a final custom design.
After that we have our own water injection piece which injects water
from the middle of the pipe. Here the exhaust gas temperature is cooled
down rapidly and efficiently before it goes into our water separator
2. Get as much info as possible
(scrubber).
For us to design the optimal
Here the water and the exhaust gas are separated. Our water separator exhaust system we would like
also works as an extra silencer. to have the engine room as
build drawing. We also would
All is designed within back pressure limits and requested noise
like to receive from you the
reduction.
engine output data as extensive
By using such an exhaust system we can guarantee that the yards client as possible.
will get the cleanest and most silent system available. If the refit will include an
under water exhaust, we also
need the wave pattern at
different speeds.
Emission reduction
3. Check the available data
Noise Soot NOx SOx CO,HC
In our experience data can
I I I I I change after delivery of the
yacht. Please check all data on
accuracy.
Silencer Soot trap SCR* Scrubber Catalytic
Urea Low sulfur Converter
Fuel
*Selective Catalytic Reduction