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TECHNOLOGY VISION 2035
FIG 3.4 CO INTENSITY CHANGES IN SHIPPING AFTER THE IMPLEMENTATION OF THE EEDI AND
2
THE SEEMP[5]
30
Base case scenario
Intermediate case scenario
Best case scenario
CO 2 Grams per ton-mile 20.8
25
20
The first year the 17.2
EEDI is required to
newly delivered ships 16.4
15
2005 2010 2015 2020 2025 2030 2035
vessel will always prove to be a “cleaner” vessel benefiting human-health and the environment,
compared with a ship not optimised for energy including benefits from reduced acid deposition
consumption. It is indicated that SEEMP measures in our oceans.
(mainly operational) will have an effect mostly
in the medium term (e.g. 2020), whereas the 3.2 SO EMISSIONS REDUCTION MEASURES
X
EEDI measures (technical) should have significant Based on existing marine engine technology
impact in the long run (e.g. 2030-2050) as fleet and expected technology developments, ship-
renewal takes place and new technologies are owners currently have two main choices for SO
X
adopted. emissions reduction – either to install an exhaust
gas scrubber or to switch over to low sulphur fuel,
When these programmes are fully phased in, including LNG.
ships will be 30% more energy efficient than they
are today. These energy efficiency improvement The exhaust gas scrubber allows the ship to use
measures are different from other emission cheaper, readily available high sulphur fuel. Besides
abatement technologies as they fulfil two removing nearly all sulphur from the engine
purposes – they reduce fuel oil consumption and exhaust, a scrubber also removes a large part of
not emission directly, and they are (potentially) soot and particulate matter. However, the system
cost effective. takes up space, and requires significant investment
cost and additional energy for its operation.
It may be noted that while the yield of individual Installations are generally bulky and require
measures may be small, the collective effect of alterations on-board ships, such as additional tanks,
these measures on the environment would be pipes, pumps and a wash-water treatment system.
significant. More efficient ships will also emit Since these require additional energy for their
lower amounts of other pollutants such as NO , operation, power consumption is increased by
X
SO and particulate matter (PM). Emissions some percentage, thereby increasing the total CO
X
2
of CO , which are directly related to fuel oil emissions.
2
consumption, will be reduced by 30% per ship
compared to typical ships operating today (Fig 3.3 NO EMISSION REDUCTION MEASURES
X
3.4). Reduction in these air emissions will restrict Ship-owners currently have the following choices
global warming and climate change, thereby, for NO emissions reduction:
X
176 WATERWAYS
