Harbour Icebreaker


Built 2014
Yard Uudenkaupungin Työvene Oy, Uusikaupunki
Ice Class 1A Super
Length 40 m
Width 12,8 m
Draught 5,5 m (max.)
Main engines 2 x Wärtsilä 9L20, IMO Tier II
Speed 12 knots (max.)
Manning 3–5
Call Sign OJQM

Harbour Icebreaker IB Ahto

Arctia Karhu Ltd.  provides harbour icebreaking and towing services in the Bay of Bothnia and the whole Baltic Sea. Harbour icebreaker Ahto was delivered to Arctia Karhu by Uudenkaupungin Työvene in September 2014. It is a 1A SUPER ASD class tugboat that fulfills escort tug requirements. In addition, the vessel is equipped for oil spill response in icy conditions.

As a heavy Arctic harbour icebreaker and escort tug, the vessel has been dimensioned to cope with the difficult, icy conditions  in the Bay of Bothnia, where it will function as a harbour icebreaker for the Ports of Kemi and Tornio in wintertime. It is equipped with two azimuth thrusters, a towing arch and a winch.

Video: IB Ahto testing ice management in oil recovery

LNG icebreaker

Polar icebreakers

Oil Recovery Icebreaker


Harbour Icebreaker