Imperial Russian icebreaker <i>Tsar Mikhail Feodorovich</i>. Today museal ship in Tallinn, Estonia, under the name <i>Suur Tõll</i>.
Unknown author<span style="display: none;">Unknown author</span>
before 1917 <div style="display: none;">date QS:P,+1917-00-00T00:00:00Z/7,P1326,+1917-00-00T00:00:00Z/9</div>
http://forums.airbase.ru