Transportation's Role in Reducing U.S. Greenhouse Gas Emissions ...

Transportations Role in Reducing U.S. Greenhouse Gas Emissions: Volume 2
Table 3.6A Projected Impact for Ship Design Technology Strategies
Strategy Ship Types
3-100
Anticipated Fuel
Savings (Percent)
Anticipated Annual
Reduction in Fuel Use
(Million Gallons)
Anticipated CO2
Reduction
(Million Tons)
Enhanced Ship Design Tankers/Bulkers 2 – 35 % 21 – 364 0.23 – 4.11
Container 42 – 741 0.48 – 8.37
Roro a 9 – 163 0.11 – 1.84
Passenger 8 – 135 0.09 – 1.52
Offshort Support
Vessels 10 – 180 0.12 – 2.03
Interceptor Planes Roro 4% 19 0.21
Ferry 15 0.17
Ducktails Container 7% 148 1.67
Roro 33 0.37
Ferry 27 0.30
Bubble (Air) Lubrication Tankers/Bulkers 10 – 15% 104 – 156 1.17 – 1.76
Container 212 – 318 2.39 – 3.59
Combined (2050) All Categories 2 – 35% 1.0 – 17.9
Combined (2030) 2 – 24% 0.7 – 12.0
Note: Assuming vessel split obtained from Corbett, Firestone, and Wang (2007) and projected fuel usage
based on 2009 AEO data.
a Roll-on/roll-off, or ships or ferries designed to carry wheeled cargo
Cost-Effectiveness
The capital cost associated with interceptor planes and ducktails can be a significant
barrier to implementation, particularly if the modifications are made to existing vessels
rather than applied to vessels that are under construction (Mangum, 2009). The cost
associated for installing bubble lubrication systems run from $0.5 to 1.0 million per vessel
(Mangum, 2009). The anticipated fuel savings for these modifications often justify the
modification costs.
Cobenefits
Minor environmental cobenefits are expected from these strategies, as pollutant emissions
should be reduced roughly in proportion to fuel consumption. These benefits will be
most significant for domestic vessels operating in near-shore waters, where emissions will
result in the greatest population exposure.