Abstract
The reduction of ship pollutants is a key issue in the international agenda. Emissions estimation is usually based on standard calculations that consider the different scenarios of ships. This work presents research on the influence of added resistance on ship emissions and freight throughput. First, a methodology to assess the added resistance influence is shown. The procedure is applied to a roll on-roll off ship under two load conditions. Analyses are computed to value wind- and wave-added resistances for different seasons. An investigation on ship pollutant emissions for a whole route is performed. Moreover, the influence of added resistance on the ship freight throughput is analyzed. Finally, some relevant information is concluded. For instance, a difference of up to 53% in pollutant emission estimation is observed if added resistance is considered. Additionally, the navigation in added resistance conditions could lead to a freight loss of 18% per operational year.
Highlights
Ship Pollutant Emissions and FreightToday, green shipping is a target of policies in the international agenda
An increasing number of shipowners are putting their efforts into the new concept of green shipping, studying new water ballast systems, new propulsion systems, storage systems, alternatives to traditional fuel consumption, etc
Wave lengths are in a range between 0.25 and 3.0 of dimensionless wavelength (λ/Lwl ), where Lwl is the waterline length in steps of 0.25
Summary
Green shipping is a target of policies in the international agenda. Current circumstances regarding SARS-CoV2 relegate these issues in a second plane. Research on green shipping and new points of view in ship design should be addressed. More efficiency should be a key objective in new ship designs [1]. An increasing number of shipowners are putting their efforts into the new concept of green shipping, studying new water ballast systems, new propulsion systems, storage systems, alternatives to traditional fuel consumption, etc. There is a gap in the literature in terms of the study in early design steps of the impact of the weather on vessel navigation, pollutant emissions and the whole economy of ships
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