Odfjell SE Annual Report 2012

Energy-saving campaign
In 2012 an internal campaign was launched encouraging
all Odfjell employees to suggest energy-saving initiatives
where the best proposals received awards. Several of the
proposals will be initiated in 2013.
Environmental impact of the Odfjell fleet
In 2012 the Odfjell fleet consumed 569,000 tonnes of fuel
oil, of which 22,000 tonnes were marine distillates. Based
on the consumption of 104 vessels, total emissions of
CO 2
amounted to 1,774,000 tonnes, which represents a
4% increase in shipping-related emissions compared to
2011. Total emissions of SO X
rose 0.8% to 27,619 tonnes,
reflecting the increased operated fleet. All fuel purchased
by Odfjell is tested by the third party company Det Norske
Veritas Petroleum Services (DNVPS). Test results on the
fuel purchased in 2012 revealed a sulphur content of 2.44%,
compared with 2.54% in 2011. The global limit in 2012
outside ECA was 3.5%.
Odfjell has a Fleet Performance Group which supervises
voyage optimisation/ocean routing, fleet tracking, and
analyses speed, consumption and emissions of all ships
on a daily basis using a well-established performance
monitoring system.
SO X
emissions
Based on all consumption in 2012 (both at port and at
sea), Odfjell`s vessels emitted on average 0.27 grams
per tonne cargo transported per nautical mile. This was
slightly below 2011 levels.
CO 2
emissions
In 2009 IMO issued guidelines for the voluntary application
of an Energy Efficiency Operational Indicator (EEOI), defined
as the amount of CO 2
emitted per unit of transport work.
Since 2008 Odfjell has calculated the EEOI at ship and fleet
level in accordance with IMO MEPC Circular 684. In 2012
the EEOI for the Odfjell fleet was 17.48 grams of CO 2
per
tonne cargo transported one nautical mile (g/tnm). This
was a slight improvement compared with 2011. The EEOI
for the main ship groups sorted by deadweight is shown
in the table below.
Speed/consumption reduction scheme
In 2012 Odfjell Tankers operated between 40 and 50 ships
in slow-speed mode. This generated a net fuel saving of
about 90,000 tonnes, which corresponds to emissions
savings of approximately 280,000 tonnes of CO 2
and 4,400
tonnes of SO X
. With the current fleet composition and speed
mode, we expect to see similar savings in 2013. 28 of our
ships are currently being considered for further speed/
consumption reductions.
External weather routing
Advanced weather routing services have been used on the
Company’s owned and time chartered ships since 2009
and around 900 voyages used the service in 2012. This is
expected to have given a 45 day saving, which corresponds
to about 5,000 tonnes of CO 2
.
Intermediate hull cleaning and propeller polishing
In 2012 hull cleaning and propeller polishing were also
carried out between scheduled dry-dockings. All Odfjelloperated
ships, both time chartered and owned, are closely
monitored and cleaning intervals are shortened if required.
This type of intermediate cleaning results in a significant
reduction in fuel consumption and subsequent emissions.
Speed increases of up to 18% have been reported on precleaning
consumption.
EEOI CO 2
emissions
Gram CO 2
per tonne cargo transported
1 nautical mile (main ship groups)
70
60
50
At sea
Total
40
30
20
10
0
4–6 000
DWT,
9 vsls
8–17 000
DWT,
19 vsls
20–25 000
DWT,
18 vsls
30–37 000
DWT,
25 vsls
40–51 000
DWT,
33 vsls
All fleet,
104 vsls
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odfjell annual report 2012