THE ECONOMIC COST OF SOMALI PIRACY, 2012
Appendix D: Methodology for Calculating Cost of Re-Routing Determining the percentage of ships re-routing
Calculation: • For 2003-2004 Data: [Number of ships in D1-D4]/[Total Ships in the HRA] = ROld • For 2012 Data: [Number of ships in D1-D4]/ [Total Ships in the HRA] = RNew • % Re-Routing = (ROld – RNew)/ ROld Determining the cost of re-routing To determine the number of ships that might reroute, we took the total number of tankers and bulk carriers that transited the Suez Canal, which was 3,639 and 2,936, respectively To determine the additional distance resulting from re-routing, we used a distance calculator available at http://www.daftlogic.com/projectsgoogle-maps-distance-calculator.htm to generate the following maps: This data can be accessed at http://globalmarine.nceas.ucsb.edu a project of One Earth Future Foundation
46
©2013