INCORPORATING POWER VARIATIONS INTO
WEATHER ROUTEING AND WHY IT MAY
LEAD TO BETTER RESULTS

F. Aligne*, M. Papageorgiou** and E.Walter***

*Dιpartment d'Analyse et de Rιgulation du Trafic, INRETS,
94114 Arcueil, France, aligne@inrets.fr
**Dynamic Systems and Simulation Laboratory, Technical University of Crete,
73100 Chania, Greece, markos@dssl.tuc.gr
***Laboratoire dea Signaux et Systemes, CNRS-Supιlec, 92192
Gif-sur-Yvette, France, EricWalter@lss.supelec.fr

ABSTRACT

This paper discusses and illustrates an optimization algorithm for ship weather routeing, based on dynamic programming. Contrary to classical implementation in weather routeing, it allows power variations. This algorithm is applied to several examples combining time and fuel minimizations, and compared with classical weather routeings. An empirical dynamic navigation model is used to show that classical weather routeing applications of dynamic programming could lead to suboptimal routeing. Copyrightã 1998 IFAC.