Why working with baselines makes so much sense to improve fleet performance?
A solid method to see the status and development of vessel or fleet performance is to compare the actual measured values with the expected ones. The expected ones are typically available for fleet performance in what we call “baselines”. They can come from 3 different sources:
- from technical tests, like model tank tests, shop tests or sea trials
- from commercial contracts, like charter party curves or performance targets
- from past performance, like the last 6 months laden condition good weather performance
The clou of a baseline is that is typically covers several dimensions in one, like speed-consumption at laden condition and good weather (for charter party or sea trial baselines) or specific fuel oil consumption over engine load at comparable ISO conditions. This makes it much stronger than a simpler KPI, like FOC / day or FOC / nm. By comparing measured values with a baseline you compare only values that can be compared and reduce uncertainty in results.
In ECO Insight you can use baselines in several analytics. Lets have a look at the most common one, which is the speed consumption analysis:
In above graph you see three speed-consumption baselines
- The the purple one is the charter party baseline here selected at design draft (see select button on top), where the vessel should not perform “above” the curve
- The blue one is the seatrial, so the best the vessel could do when it was built
- The grey one is a past performance baseline, taken from 6 months after the last drydock
Now you can start comparing the vessel performance against the baseline. If you do this each day, you know the performance status. If you do this over time you see whether performance has improved or not. Remember: we only compare comparable speed-consumption-draft-weather conditions here, which is the strength of the baseline.
You can see that both vessels have in total performed well below the charter party baselines (both laden and ballast). However in the detail view over time on the vessel “Insight” the performance per voyage has become worse in the last 4 months than in the months before, the deviation to baseline was close to zero. This looks like a crew change. If you have a fleet of sister vessels you can also see improvements in FOC deviation to a selected baseline in the whole fleet of sisters in ECO Insight, e.g. to see whether your efforts in performance improvements pay off.
A similar analysis can be done with other baselines, like engine baselines which typically come from shop tests of the engine. Here all measured values are compared to baseline at ISO conditions automatically. In the example below we see that scavenge air pressure was well below baseline, not good, but has improved in the last months, after some cleaning was done.
In summary baselines are a very strong enabler for good vessel and fleet performance analytics. Please contact us to learn more.