Vanino–Kholmsk train ferry
The Vanino–Kholmsk train ferry (Russian: Паромная переправа Ванино — Холмск) is the ferry connection across the Strait of Tartary in Russia that connects Vanino in Khabarovsk Krai and Kholmsk in Sakhalin Oblast. This ferry connects Sakhalin Island with mainland Russia; its distance is 260 km.
Source: Wikipedia — Vanino–Kholmsk train ferry (CC BY-SA 4.0)