'Brutmachine' was a German minelaying operation by coastal minecraft in the Morskoi Canal, which had been built during the last quarter of the 19^th century in shallow water between Gutuyesky and Kanonersky islands to provide access to what was, during the Soviet era, Leningrad (24 April 1943).

A victim of this operation was the submarine Shch-323, which struck one of the mines on 1 May of the same year and sank.