Motion analytics could increase CTV efficiency

Offshore wind crew transfer vessel (CTV) operator Njord Offshore has shared its reasons for using Marfle Motion Analytics in its CTVs.

Three installations have already been carried out in Njord Magni, Njord Forseti and Njord Zephyr. Another installation in Njord Avocet will be scheduled soon. These vessels are equipped with Volvo Penta and MTU marine diesel engines. Njord Offshore operates a growing fleet 21 CTVs in Northern Europe.

Marfle Motion Analytics is an add on to Marfle Fleet Analytics. Extra motion sensors enable analysis of vessel motions in addition to the main features of Marfle Fleet Analytics.

Motion analysis is of increasing importance to CTV operators.

First, vessel operators have a duty of care to ensure the impact forces on wind turbines during ‘pushing on’ to transfer equipment and personnel are kept within certain limits to ensure no turbine damage. Therefore, impacts should be monitored and reported to the turbine owners. If damage was to occur, companies such as Njord Offshore would have a record, through Marfle, of all forces subjected to turbines by its vessels.

Second, the change in heave height of the vessel is an important parameter to keep an eye on for the safety of the transfers between wind turbines and vessels. Bad weather conditions can jeopardise the safety of the personnel and equipment during these transfers.

Sea sickness

Third, work efficiency of turbine technicians can largely be affected by their comfort during transit trips to wind turbines. Motion sickness in turbine technicians can cost many working hours per year. This can now be analysed through the system and vessels and masters can both be improved to minimise this lost working time.

In addition to motion analytics, main features of Marfle Fleet Analytics also played an important role for Njord Offshore to choose Marfle. These features include engine diagnostics, driving style analyses and fuel economy analyses.

CTV owners usually work with very strict contracts and it is crucial for them to keep the marine engines running without any unexpected surprises. Engine diagnostics tools provide real-time and long-term trend analyses for all engine parameters. In addition, driving style analysis can help vessel owners maximise their engines’ lifetime.

Fuel economy analysis also provides guidance about the most optimal speed and RPM levels to maintain low fuel consumption during operations. While oil prices are climbing, it can be a useful tool to reduce fuel costs in marine operations.

Learn more about Marfle at Seawork 2022 on stand E133.