Strategic Ship Routing Impacts of Temporal Coverage with Real-time Satellite Altimeter-Based Current Information

by Young-Kyun Lee, Florida Int Univ, Miami, United States,

Abstract: We investigate strategic ship routing impacts of temporal coverage with real-time satellite altimeter-based current information. We sample underlying daily `true' current patterns along 10-day exact repeat period (ERP) satellite's orbit to simulate current velocity profile estimated from altimeter measurements which can be exploited to select routes that reduce fuel consumption of commercial vessels. We, however, have only a limited amount of spatial coverage in short periods of time due to an orbiting satellite, and currents change location and velocity over time. We choose optimal ship routes with the estimated current and use the underlying `true' current patterns to simulate fuel savings on these routes relative to the routes which would be chosen without the current. We implemented this with dynamic programming. We compute fuel savings by fixing the travel times on routes with and without current are equal. Results show that we maximize fuel savings for both directions by accumulating up to the exact repeat period for 10-day ERP satellite. These results provide important guidelines for routing industry when processing real-time altimeter-based current information for strategic routing purpose.

Subject Headings: Satellites | Information management | Orbits | Fluid velocity | Energy consumption | Energy efficiency | Ship motion

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