MSGID: 1:317/3 64a3a090   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
    Scientists propose new strategy for modern sails to help shipping sector   
   meet its carbon reduction goals    
      
     Date:   
         July 3, 2023   
     Source:   
         University of Manchester   
     Summary:   
         Researchers have identified a strategy that can offset the random   
         and unpredictable nature of weather conditions that threaten carbon   
         emission reduction efforts in the shipping sector.   
      
      
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   Researchers have identified a strategy that can offset the random and   
   unpredictable nature of weather conditions that threaten carbon emission   
   reduction efforts in the shipping sector.   
      
   Erratic weather is a major source of concern for ship owners installing   
   modern sails to reduce carbon emissions. However, new research from   
   The University of Manchester highlights operational strategies that can   
   reduce shipping emissions by up to a quarter, strengthening confidence   
   in sails as a decarbonisation tool.   
      
   It is estimated that the international shipping sector contributes to 2-3%   
   of global carbon emissions annually and its target to cut carbon by 50%   
   relative to 2008 levels by 2050 falls short of the cuts required in the   
   Paris Climate Agreement, meaning the shipping sector requires urgent   
   global action.   
      
   The research, published in the journal Ocean Engineering, calculated   
   carbon emissions from more than 1000 ship departures setting sail from   
   three main shipping routes. The results found that combining modern sail   
   technology with efficient routing systems could provide greater assurances   
   of carbon savings by using the technique that reduces uncertainty from   
   unpredictable weather patterns.   
      
   Dr James Mason, previously a postdoctoral researcher and now a visiting   
   academic at the Tyndall Centre for Climate Change Research at The   
   University of Manchester, said: "Current measures to reduce carbon   
   emissions include fitting retrofit technologies, such as wind propulsion   
   technology, where modern sails produce direct energy from the wind to   
   reduce the power consumed by a ship's engine. Weather routing is also used   
   as an efficient routing system to allow a ship to deviate from standard   
   shipping routes to search for new routes with more favourable winds.   
      
   "Current academic methods assume a perfect foresight of future weather   
   rather than accounting for unpredictable winds that are happening in   
   real-time. This can detrimentally reduce the carbon savings from weather   
   routing and could present a real challenge for the shipping sector when   
   trying to meet its climate reduction goals."  Dr Alejandro Gallego Schmid,   
   a Senior Lecturer at the Tyndall Centre for Climate Change Research,   
   added: "This research provides an insight into which routes are most   
   sensitive to changing weather forecasts when using wind propulsion and   
   assesses a strategy that could help to mitigate the detrimental impact   
   that unpredictable weather conditions can have."  The strategy mirrors   
   existing routing methods in the sector by updating weather and wind   
   every 12 hours to allow ships to adjust their routes based on the most   
   accurate weather forecast available.   
      
   To test the strategy, the study simulated 1080 ship departures across   
   eastbound and westbound journeys in the North Sea, South Atlantic Ocean   
   and North Atlantic Ocean, which have voyage times of up to 12 days.   
      
   The research found that the method successfully reduced the uncertainty   
   from unpredictable weather and showed that sails and efficient routing   
   can provide annual carbon savings of up to 25%.   
      
   However, while the method reduces the uncertainty from unpredictable   
   weather, it does not remove it entirely. Wind propulsion and   
   efficient routing can provide maximum carbon savings of up to 29%   
   in ideal conditions and weather uncertainty reduces these savings by   
   10-20%. Further research is needed to understand how ships can achieve   
   these maximum savings in practice.   
      
   Reducing shipping emissions by up to a quarter by using wind propulsion   
   with efficient routing could provide profound benefits to the sector. The   
   research offers a clearer understanding of the potential carbon savings   
   achievable through wind propulsion decarbonisation strategies, without   
   which, objectives in the Paris Climate Agreement may become out of sight.   
      
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   Story Source: Materials provided by University_of_Manchester. Note:   
   Content may be edited for style and length.   
      
      
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   Journal Reference:   
      1. James Mason, Alice Larkin, Alejandro Gallego-Schmid. Mitigating   
         stochastic uncertainty from weather routing for ships with wind   
         propulsion. Ocean Engineering, 2023; 281: 114674 DOI: 10.1016/   
         j.oceaneng.2023.114674   
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   Link to news story:   
   https://www.sciencedaily.com/releases/2023/07/230703133044.htm   
      
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