The invention relates to the technical field of ship energy efficiency management, and discloses an energy efficiency improvement method and
system based on course-speed-trim collaborative optimization, which constructs a course
feature code based on navigation environment forecast information and electronic chart information, and combines real-time state information and decision variables of a ship to improve the energy efficiency of the ship. Generating voyage number accumulated
energy consumption expectation by using a ship
energy consumption prediction model fused by
physical information; taking expectation minimization as a target,
coupling navigation time constraints, host working condition constraints and
ship stability safety boundaries, constructing a three-variable collaborative optimization model of the
route path, the planned navigational speed of each
route segment and the planned trim value, solving the model, and outputting a collaborative optimization scheme; and on-line parameter adaptive updating is performed on the model based on real-
time data during navigation, and dynamic re-planning is triggered. The global voyage number
energy consumption optimization is realized through a three-variable collaborative optimization framework and
physical information fusion prediction, and the adaptability and robustness of an optimization scheme in a dynamic environment are improved by means of an
online learning and rolling optimization mechanism.