The "Dagmar" steam boat was built for the future Emperor Alexander III in 1870 by J.S. White & Co. The boat was required to have the necessary seaworthiness to be able to make sea voyages between St. Petersburg and Kronstadt. The builder suggested extended 37' version of its proven steam boat. In addition to the steam engine, Dagmar could be rigged with sails. The boat was named after the wife of the Crown Prince - Danish princess Dagmara.