The goal of marine energy management is to These are two separated optimization problems.
Marine energy management can both be applied on board and onshore.
It is a complex problem, due to the number of inter-related energy systems on board vessels, such as the propulsion, the auxiliary engines, refrigeration systems, HVAC, etc.
The weather and sea-state, plus the logistics involved in transporting goods from one port to another, also have big effects.
It can be addressed onshore through data analysis, leading to change in operation on board.