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THRUSTER RETROFIT IMPROVES EFFICIENCY FOR FINNISH FERRY

Tuesday, May 26, 2020 

Steerprop, together with Finnish repair yard, Suomenlahden Telakka have completed a retrofitting project for Finferries’ 'Prostvik' ferry.

In order to improve energy efficiency, the old diesel-mechanical propulsion system was replaced with electric distribution using Steerprop’s 10 CRP LM propulsion units with an integrated 400 kW permanent magnet motor. The Steerprop delivery included a modernised control system and control panels, all custom-designed on a short delivery schedule.

Olli Knihti, Steerprop Sales Manager said: “The ferry was originally built in the 80s.  The good and close cooperation with Finferries and Suomenlahden Telakka made this retrofit project possible. It was essential that we could do all checks onboard during the design phase when the ferry was still in operation as well as at the yard during the conversion.”

Small-tonnage repair and maintenance yard Suomenlahden Telakka recommended the technology to Finferries. “We know Steerprop’s LM configuration saves space in the vessel and brings a greater level of simplicity to the engine room,” said Jukka Jaatinen, MD Suomenlahden Telakka. “Additionally, it was a more straightforward installation process for us, since the propulsion system is extremely compact with lower weight.”

The electric propulsion system brings economic advantages. “The diesel engines can run according to the power requirement, and fuel consumption is optimised. The ferry also has a DC link, which allows future upgrades such as adding a battery to the vessel,” said Knihti.

The Steerprop 10 CRP LM propulsor system features a dual-end contra-rotating propeller (CRP) which combines the manoeuvrability of azimuth propulsors with low pressure pulses and noise levels. The integrated vertical permanent magnet motor provides reliable high-power propulsion, increased fuel savings and lower emissions. Steerprop has delivered over 140 CRP units to vessels.

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