29. September 2021 | Coach Solutions

In the first article in a series of “position articles” our Head of Performance Management, Christian Råe Holm is looking at high frequency data. What to consider? What are challenges and how to overcome the challenges?

 

With COACH Solutions’ strong ties to the tramp segments, we have seen that many owners are still only on the verge of looking into high frequency data logging. This means that we are seeing a lot of first encounters with using high frequency data as well as some failed attempts. We are encountering the autologging providers in much the same way as our clients are and therefore see some of the same challenges and doubts as they do.

 

“Challenges to overcome”

The first challenge to overcome is to make the data available to the shipowner and any connected software providers, like ourselves. The companies specializing in collecting high frequency data have in many cases only focused on making the data available onboard or in their own systems but not yet put too much effort into sharing the data via API or similar. This is not a new challenge and data hubs do exist for facilitating data sharing, such as the Vessel Insight platform developed by our parent company, Kongsberg Digital.

However, we still often encounter the issue of data not being easily shareable by the data collector. We believe that it is a must for the different autologging providers to offer strong API’s where data can be shared in order for existing and potential clients to gain benefits from having high frequency data logging systems installed.

The next challenge is that the data collection systems can potentially collect hundreds or even thousands of fields at frequencies down to every few seconds. It can be tempting to show all this data as timelines to have real-time information about what exactly the vessel is doing right now. However, the massive data amounts can quickly overwhelm the end user without giving any advice about what to do with it. In the failed attempts at adopting datalogging, the story is often the same: the clients ended up with having gigabytes worth of data just accumulating and no-one looking at it anymore. It simply becomes a monumental task!

We try to approach this last challenge in the same pragmatic way as we do for all the problems we solve for our clients: focus on what matters and keep things that do not require attention out of focus. In this context, it means focusing only on the crucial data points, that really can make a difference compared with only having noon report data.

 

“More challenges to overcome”

When we do performance calculations based on noon reports, we enrich the noon reports with information from hourly AIS positions and hindcast weather information in each of the AIS points to be able to better consider the weather conditions affecting the vessel. However, the performance figure will still be an average over the entire noon report period because we only have information about the propeller power from the noon report and therefore must assume it is constant over the entire period. Methods do exist to distribute the propeller power over a noon report using speed information from AIS and we have experimented with applying one of these, but the result will still be an approximation.

If, however, we can obtain the shaft power data, even just on an hourly basis, from a high frequency data provider, we will be able to remove the reasonably large assumption that the vessel has constant speed, power, heading and weather conditions throughout a 24-hour period and instead apply the same assumption for a 1-hour period. This is the approach we are recommending to our clients embarking on using autologging because shaft power is the one figure that really makes a difference to get at high frequency. Down the line, other fields can be added to the performance calculations such as onboard weather measurements, direct speed over ground measurements from the GPS or even speed through water measurements from suitable instruments, if available.

Nevertheless, we believe the shaft power remains the one figure to focus on to begin with. This also means that extra care should be put into calibrating the equipment measuring the shaft power. We have often seen that the high frequency data collected has been either offset or outright wrong since the equipment has not been maintained and calibrated on a regular basis leading to worthless data being collected.

 

“….So?…..”

To sum it up, high frequency data is a logical step up from noon reporting based performance monitoring and one that will be more easily available with each passing year. However, we recommend not rushing into it but instead to carefully evaluate which parameters make sense to collect in high frequency and what exactly they should be used for. Lastly, we advocate for the importance of a ship owner to ensure that the entire vessel fleet is covered with a strong and solid data infrastructure which allows for both high and low frequency data collection.

 

Written by Christian Råe Holm, Head of Performance Management at COACH Solutions.
Christian has a M.Sc. in Naval Architecture from DTU (Technical University of Denmark) and, before joining COACH Solutions in 2016, he worked with CFD based hull form optimization at FORCE Technology, Lyngby, leading their CFD team.

Recent
Popular

5. October 2021 | Coach Solutions

Meet a COACH – Filip Bojanowski

Here at COACH Solutions, we are very proud of our most valuable and greatest asset – our employees. Without them – no COACH Solutions. In today’s “Meet a COACH” interview we are literally flying green – and flying high! Filip Bojanowski, who is our Head of Software Development gives you some insight on some of […]

29. September 2021 | Coach Solutions

First experiences with high frequency data: what to consider?

In the first article in a series of “position articles” our Head of Performance Management, Christian Råe Holm is looking at high frequency data. What to consider? What are challenges and how to overcome the challenges?   With COACH Solutions’ strong ties to the tramp segments, we have seen that many owners are still only […]

14. September 2021 | Coach Solutions

Meet a COACH – Line Kiaerskou

Here at COACH Solutions, we are very proud of our most valuable and greatest asset – our employees. Without them – no COACH Solutions. In our line of “Meet a COACH” interviews we have this time spoken with Line Kiaerskou from our Sales Team. Line is not only bringing a lot of shipping experience – […]

9. September 2021 | Coach Solutions

Is Performance Benchmarking important?

Prediction of ships’ speed-power relationship at speed intervals below the design speed Setting a correct performance benchmark is crucial for monitoring vessel hull performance efficiently. With more ships slow steaming in order to meet EEXI requirements, accurate benchmarking can become an issue because sea trials and model tests are typically performed in the design speed […]

8. September 2021 | Coach Solutions

PRESSE RELEASE

                                                                                                              […]

18. November 2020 | Coach Solutions

Why is weather routing so important?

The aim of weather routing is to achieve optimum speed in order to perform the voyage as energy efficient as possible reducing bunker consumption while providing the safety of ship, crew and cargo. The IMO has publicly states that utilizing weather routing services reduces fuel consumption by up to 3% and even further with larger […]

1. July 2020 | Coach Solutions

Kongsberg Digital acquires COACH Solutions

Kongsberg Digital has acquired COACH Solutions, a leading supplier of software solutions for vessel performance and monitoring. COACH’s vessel performance monitoring system was developed by Danish shipping company Clipper Group. In 2016 COACH was established as an independent company – COACH Solutions ApS – which has grown rapidly. Its software currently has over 900 licenses […]

18. January 2021 | Coach Solutions

Monitor Cylinder lube oil consumption

Cylinder lube oil consumption is one of the most overlooked consumers in fleet performance management. With saving potentials anywhere between 5-10% and often higher there is great value in monitoring the consumption and taking action. Over-lubrication does not only directly impact your profit and loss it also has a negative technical impact on your equipment. […]

12. September 2019 | Coach Solutions

COACH Solutions releases IMO 2020 module

COACH Solutions releases IMO 2020 module COACH Solutions have, in close cooperation with our dedicated clients, developed a simple overview to help operators manage the increasing demands posed by the 2020 global Sulphur Cap. In short, it gives the operator a constantly updated overview of which fuel types are on board the vessel, in which […]

23. September 2019 | Coach Solutions

COACH Solutions launch updated web portal

COACH Solutions has launched an updated web portal to serve existing and new clients. The updated web portal helps the clients continue being updated on the performance and current status of their vessels. The site offers an even more user-friendly navigation platform as well as increased responsiveness. In addition, the back-end for the market leading […]

Related articles