Complex sentence: In 1920 icebreaker "Lenin" was in distress and was rescued by icebreaker "Svyatogor", later renamed "Krasin" with 85 persons on board, including women and children.
Split into simpler sentences: In 1920 icebreaker "Lenin" was in distress and was rescued by icebreaker "Svyatogor" (later renamed "Krasin"). At the time of this rescue operation "Lenin" had 85 persons on board, including women and children.