 Complete the following phrase:  The Northern Shipyard Stocznia Północna was also formed in June 1945, when it was known as Shipyard No. 3. Its activities were mainly production and repairs of trains, trams and small floating units. In December 1945 Shipyard No. 3 had a workforce of 694, including 8 engineers and 28 technicians. Launches began in 1948  smacks for the Gdańsk Institute of Sea Fishing were delivered and 53 rescue boats were built. In 1949 the shipyard started to produce fishing lugo-trawlers. In February 1950 Shipyard No3 changed its name to Northern Shipyard and in 1951 it ended production of trains, specializing instead in small cargo ships, fishing vessels and scientific ships. In 1952 the shipyard delivered 14 vessels. After 1955, the shipyard built vessels for the navies of Poland, USSR, Bulgaria, Yugoslavia and East Germany  mainly for troop landing craft, hydrographic, rescue, training and torpedo boats. In 1975 the shipyard was named 