 STT was merged with another Italian shipbuilding firm, Cantiere Navale Triestino, in 1929 to form Cantieri Riuniti dell' Adriatico (CRDA).As CRDA Trieste, its shipyards remained active well into the postwar period, becoming part of the Fincantieri group in 1984.Stabilimento Tecnico Triestino had its origins in a private shipyard founded by Giuseppe Tonello at San Marco, on the coastline west of Trieste, in 1838.