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Safe, non-pollutant shipping,

with Swedish shipping leading the way

Technical workshop meeting onemissions from aviation and maritime transport4 Oct 2007 Reidar Grundström

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Difficulties Leisure boats 74 Gg, 13% of domestic CO2

• Engine characteristics – emission factors

• Installed engine types

• Number of boats

• Fuel used

0

100

200

300

400

500

600

700

800

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

Emissions of CO2 fordomestic navigation 1990-2004

1990

1000-tonnes (Gg)

567

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Leisure boats - survey

• Survey 2004 by telephone(Statistics Sweden) to estimate number of boats, type, size, use etc

• 13 000 persons (about 81% responded)• Results: 718 000 boats in total

– Roughly 200 000 with gasoline engines(> 10 kW installed power)

– About 32 500 m3 gasoline used, 2004– 51% 2-stroke engines– About 12 000 m3 diesel used, 2004

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Leisure boats - survey

• Quality of results – considered to be good

• Results of survey 2004 used in climate reporting

• Second survey planned to 2008 – yet to be decided

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Thank you for paying attention!

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Leisure boats

Gasoline [g/kg fuel]

NOx NMVOC CH4 CO NH3 N2O

2-stroke 2.67 505 5.06 892 0.004 0.02

4-stroke 9.70 34.4 1.72 1 022 0.005 0.08

Reference:EMEP/CORINAIR 15 February, 1996 Emission Inventory GuidebookTable 8-2: Bulk emission factors for 'Other Mobile Sources and Machinery', part 2: gasoline engines - Inland waterways