Global energy-saving map of strong ocean currents
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Authors
Chang, Yu-Chia
Tseng, Ruo-Shan
Chu, Peter C.
Shao, Huan-Jie
Subjects
Vessel
Current
Energy-saving
Route
Current
Energy-saving
Route
Advisors
Date of Issue
2015
Date
Publisher
Royal Institute of Navigation
Language
Abstract
This study provides a global, detailed, and complete energy-saving map of strong ocean currents from the absolute geostrophic velocities calculated from satellite altimetry data, with the focus on the strong Western Boundary Currents (WBCs) in the global ocean. Theoretically, the WBCs with speeds of 2–3 knots can reduce fuel consumption by 25–50% for vessels at a sailing speed of 6 knots. The fuel savings are greater for a lower sailing speed than for a higher sailing speed. For about 1·8 million motorised fishing vessels with a lower ship speed, strong currents can evidently save fuel, time and money. Since global fishing vessels generate roughly 130 million tonnes of CO2 per annum (FAO, 2012), effective utilisation of the energy-saving map could significantly reduce CO2 emissions from ship operations.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1017/S0373463315000466
Series/Report No
Department
Oceanography
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Naval Oceanographic Office
Ministry of Science and Technology of Taiwan, ROC
Ministry of Science and Technology of Taiwan, ROC
Funding
MOST 102-2611-M-110-010-MY3
N623-612PO00123 (NOO)
N623-612PO00123 (NOO)
Format
19 p.
Citation
Y. Chang, R. Tseng, P.C. Chu, H Shao, "Global energy-saving map of strong ocean currents," Journal of Navigation, (2015), 18 p.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.