US Fishing Vessel Powering and NOx Emissions
Autor: | Robert Latorre, Joseph P Cardella |
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Rok vydání: | 2007 |
Předmět: | |
Zdroj: | Marine Technology and SNAME News. 44:175-179 |
ISSN: | 1542-0566 0025-3316 |
DOI: | 10.5957/mt1.2007.44.3.175 |
Popis: | This paper presents the results of SNAME Small Craft Panel SC-3 Fishing Systems investigation of trends in US fishing vessel (Fig. 1) (L> 22.9 m) powering and NOx emissions (1900–2000). The study estimates the 1, 299 vessels in the US fishing fleet produce 306 tons/day of NOx. The largest powers are found in the decades of 1960–1980. The actual power kW is compared to a reference power kWo using the Powering Index Ratio PIR = kW/kWo. It was found that 50 to 80% of the power in seiners, trawlers, and crabber/ trapper/clam vessels have PIR > 2.5. The reduction of fishing vessel diesel engine NOx can be best achieved by adopting acceptable levels of vessel power/length for the basis of revenue and tax rather than using the vessel age as emissions reduction criteria. |
Databáze: | OpenAIRE |
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