Finnpusku is an integrated tug and barge system owned and operated by , a Finnish shipping company that specializes in bulk cargo transports in the Baltic Sea. The system was developed in the 1980s by Finnlines, another Finnish shipping company that also managed the vessels until 2003, in co-operation with Rautaruukki to transport raw materials to the Raahe . Two pushers and five barges, four of which remain in service, were delivered by in 1986–1987. Today the Finnpusku system consists of pushers Rautaruukki and Steel, and barges , , and .