Shipbuilding was in upswing in the 1870s .
Helsingfors Skeppsdocka built total 16 steam launches and tugboats with iron hull and a number of wooden barges , rescue boats and other vessels .
Shipbuilding was in upswing in the 1870s and Helsingfors Skeppsdocka built total 16 steam launches and tugboats with iron hull and a number of wooden barges , rescue boats and other vessels .