Norwegian technology company Miros has launched a new Speed Through Water dry-mounted radar-based system to optimise hull speed with greater accuracy than achieved previously.
The new technology has proven fuel savings and emissions across all ship types with pilot customer BW Dry Cargo believing up to 10 per cent fuel savings can be achieved through leveraging accurate speed through water measurements.
“Access to accurate speed through water data will enable improvements in the application of ship performance optimisation protocols. This, in turn, will lead to significant cost efficiencies for ship owners. This is a breakthrough in efficient and data-driven ship performance management and an important contribution to ambitious goals for lowering emissions in the industry,” said Miros CEO, Andreas Brekke.
Accurate speed through water measurements are essential for optimising performance, as well as avoiding operation at suboptimal speeds, with the resulting additional costs. “Using underwater instrumentation on moving vessels involves many uncertainty factors, everything from incorrect calibration to fouling, that can lead to unreliable measurements,” stated senior sensor development manager Rune Gangeskar of Miros, adding that underwater equipment also requires expensive and time-consuming installation and maintenance procedures.
Using Miros’ X-band radar-based sensors mounted above the waterline eliminates these issues whilst providing more accurate and more reliable measurement of a ship’s speed through water.
The accuracy of Miros Speed Through Water measurements for a vessel in transit is typically 5cm/s, whilst noise and disturbance from vessel motion and propellers can give speed logs variances of between 10cm/s and several m/s. “Just a couple of knots on the speed vs. consumption curve can easily increase the daily fuel consumption of a ship by several tons,” said Mr Gangeskar.
“In recent years Miros has made significant advances in the accuracy of wave and current measurements. Now these advantages can be applied to vessel fuel optimisation. For both cost savings and environmental compliance, the improved accuracy can have a significant impact.”
As a part of a 6-month pilot-project, BW Dry Cargo is testing the new technology on its BW Rye newbuild. The initial results of the pilot are promising, and BW Dry Cargo’s managing director, Christian Bonfils, believes Miros’ technology can reduce fuel consumption by up to 10 per cent.