Green ship technoloGy
Owner with a heart of green
Self-starting, green-conscious shipowning partners Wallenius Wilhelmsen
have been making significant advances in turning environmentally-friendly
aspirations into shipping reality writes Hugh O’Mahony.
W
a l l e n i u s Wi l h e l m s e n size matters when calculating the trade-off
Logistics vice president between fuel consumption and speed:
e n v i r o n m e n t , L e n a Faust can carry up to 8000 cars.
Blomqvist, said the shipowning partners
had been making good progress in
securing contracts through 2007 for dioxide emissions in a six year period
low sulphur content fuel oil to run car between 2001 and 2006 – a 33.6%
carrier services worldwide, as part of reduction. This saving was more than
the far-reaching green strategy being the amount of sulphur dioxide that
pursued by the carriers. London emitted into the atmosphere
‘This year we feel we have done well over a similar period. WWL was the first
to keep the sulphur content of our fuel shipping line to achieve such results.’
down to low levels. The year to date Efforts are also continuing to reduce
figure for October 2007 was 1.3% - well NOx emissions. Vessels newly built for
below our self-imposed target of 1.5% the Wallenius Wilhelmsen partnership
globally,’ she said. all exhibit improved NOx emission
‘Currently, we have contracts for low figures for both the main engine and
sulphur fuel oil in Europe with Shell the auxiliary engine. A total of 22 vessels
and Total, in Singapore with Petrobras, now have slide valves installed which
in USEC with Colonial Oil. Shell is still have reduced NOx emissions by 20%
our primary supplier of bunker fuel with to use and see a steady flow of global to 30%, Mrs Blomqvist said. One ship,
a sulphur content of 1% or less. availability low sulphur fuel oil. Indeed, meanwhile, includes a scavenging air
‘The contract with Total expires at we would like to see a global standard of moisturisation system that produces the
the end January 2008. After this we will 1.5% rather than the 4.5% of now. same effect.
endeavour to buy low sulphur fuel on the ‘However, we are realists. If, in the Meanwhile, Yarwil, a joint venture
spot market for delivery in Zeebrugge interim and until such time that good between Yara of Nor way and
since the availability of low sulphur fuel quality 1% low sulphur fuel is readily Wilhelmsen Marine Services, is set to
appears to be good in Europe. There available globally in the shipping provide a new NOx reduction solution.
is one company that can provide low industry, we do see a place for solutions ‘Today, this solution is only available on
sulphur fuel oil in Japan where we use like scrubbing, because we firmly small ships, but it can reduce NOx by as
spot fuel, but in South-East Asia we believe that it is better to have some sort much as 95%,’ said Mrs Blomqvist. ‘The
bunker more frequently, primarily in of treatment system than none at all. system provides a urea solution to the
Singapore where supplies of low sulphur ‘However, for scrubbing technologies hot exhausts of ships and then passes
fuel are readily available.’ to work they need to be acceptable to us. it through a catalytic converter. This
However, following the distribution tie We would need to be convinced that, (1), is known as the ‘downstream’ solution,
up agreed between gas scrubber maker the washed water from scrubbing does but it can provide a solution in special
Krystallon and Wilhelmsen Maritime not cause additional negative effects trades and where it is otherwise difficult
Services to distribute the Krystallon SOx to marine life, and, (2), and that the to obtain an adequate reduction in NOx
and PM reduction technology globally residues from scrubbing can be taken emissions.’
(see p79), Mrs Blomqvist was keen care of in a safer way. Scrubbing does Where environmentally-friendly
to demonstrate that the partnership’s provide a better way of dealing with the fuel cell technology remains a long-
thinking is pragmatic. problem for special types of ships going term objective for auxiliary engines,
‘The Wallenius Wilhelmsen Logistics’ on special trades (short sea, for example, efforts are also being made to reduce
basic philosophy is still to work with or in the SECA areas).’ emissions here on a more immediate
preventive and upstream solutions, ie To date, Mrs Blomqvist asserted, the basis. According to Mrs Blomqvist: ‘A
to attack the root cause of a problem tough Wallenius Wilhelmsen Logistics system developed by Wärstilä called
and limit the formation of emissions,’ environmental policy had ‘saved the WetPac (previously called CASS) is
she said. ‘Therefore, we would first like world from 75,550tonnes of sulphur being installed [on] three [ships] by the
80 The Naval Architect January 2008
NA Jan - p80+
81.indd 80 04/01/2008 15:57:39
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