good advice about the visa. But be weary about the ferry. When I was in Sochi, in 2002, there was a ferry to Batumi, Georgia, but it was a hydrofoil, and the captain refused to accept my bike, because, he said, it was too big to go through the door (a BMW F650!). There was a once-a-week ferry to Istanbul, apparently a bigger ship, but I was unwilling to wait a whole week, and perhaps be refused again. There was no ferry to Trabzon. Since I didn't have a visa for Ukraine, I decided to take a long detour (8500 km) via Finland, Sweden, Denmark. etc. to arrive in Turkey 10 days later, at the same time it would have taken me waiting for the ferry. (I did have a visa for Georgia, but the border was closed, probably still is.) So, it's good to be versatile, and it is also wise to give yourself some extra time on your Russian visa, which is, apparently, a stinker to get extended.