She also had a bow propeller for maneuvering in port and docking maneuvers.

The drawback of a single bow propeller was that it would lubricate only one side of the hull.

On 2 February 1942, she ran aground while assisting an icebound convoy of six cargo ships, damaging her bow propeller.

While initially designed without a bow propeller, her bow was later completely rebuilt with one.

Diesel electric machinery was chosen for its controlability and resistance to damage, and she also had a detachable bow propeller.

While not the cheapest, the shipyard had the shortest delivery time - only seven months - for an icebreaker with bow propellers.

In 1907, another icebreaker with a bow propeller, Tarmo, was ordered from the builders of Sampo.

While the icebreaker still had its bow propeller, it was of no use as it was waiting for installation on the foredeck.

Powerful diesel-electric machinery drove two stern and one auxiliary bow propeller.

The maneuvering system, incorporating dual rudders and dual bow propellers, represented significant technical innovation.