BERLIN, Jan 18 (Reuters) - The United States has informed the German government that it plans to sanction Russian vessel "Fortuna", which is involved in construction of the Nord Stream 2 gas pipeline, and its owner KVT-RUS, German business daily Handelsblatt reported on Monday.

U.S. government officials informed Berlin and other European allies on Monday that the sanctions would go into effect on Tuesday, the newspaper added, without citing sources. (Reporting by Michael Nienaber; Editing by Maria Sheahan)