Eco-Trips is built around a cost model of a container liner operation. It takes three elements as input:
Each physical process is reflected in terms of
Each cost item is a function of the model's design variables. Design variables reflect
decisions to be taken by the operator. They include e.g. vessel- and leg-specific speed or
cargo to be loaded upon a vessel.
You may think of Eco-Trips as a FEM software: you use a pre-processor to define the system parameters, you solve the job and
visualize results using a post-processor.
Example: The ship has a speed and draught dependant fuel consumption rate. When multiplied by voyage duration and fuel cost this yields the propulsion share of voyage cost per leg. Speed is a direct design variable, draught is a function of the payload mass and thus the cargo loaded upon the vessel.
To help you organize your work, load-line comes with a complete job-environment. Based on a roles & rights concept, it filters jobs by user, it lets you copy or update jobs, saves images and data with the job and provides a job-blog for coordination of work teams.
This is your portal to Eco-Trips:
- Does the program optimize for maximum profit? No. Earnings per TEU are not accounted for. We assume that you maximize your profit by minimzing cost.
- What data are required to represent a ship? A couple of basic data must be provided as e.g. TEU capacity, deadweight tonnage, fuel consumption and speed at MCR. Eco-Trips generates characteristics from these data as appropriate. However, if you have measured or computed data sets e.g. for speed - draught - consumption rate these will be used.
- What data are required to represent a terminal? The key parameters are cost per move (loading, unloading, transshipment for laden/empty, TEU/FEU and GC/reefer container) and terminal productivity, i.e. moves per hour.
- What data are required to represent cargo? Cargo is being seperated into categories as
- TEU / FEU
- general cargo / reefer
- empty / laden
- How are relations between terminals being found? Eco-Trips builds upon a set of geocoding information from ports, canals and standard relations. This is sufficient for many applications - it may require fine-tuning of build-in tracks for specific trades.
We follow the nomenclature by
- Maritime Economics: Martin Stopford, 3rd Edition, Routeledge 2009