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Wednesday, November 6, 2019 

Robert Allan Ltd (RAL) says that the most powerful ice-breaking tug of its size, TundRA 3600-H (Hybrid) tug ‘Vilja’ was recently christened at Luleĺ, Sweden.

This 36m tug is said to represent yet another significant achievement for RAL. The hybrid propulsion system and the use of batteries provides the vessel with flexibility and efficiency to perform its task year-round. The tug will be capable of operating entirely on the electrical battery power feeding shaft driven motor generator sets as well as the ship’s load only or by utilising a single main engine in the hybrid diesel-electrical mode driving both shafts via the same motor generator sets producing a bollard pull of up to 55t. The two main engines in direct diesel-mechanical mode supplemented with available battery boost bring the total available bollard pull to 100t.

During the first year of operation the various operation modes will be fine-tuned to satisfy the operational requirements and the environmental conditions. The ice-breaking capability is 1m of ice thickness at 3 knots of vessel speed.

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