The lack of regular schedule for the boats across the Caspian to Turkmenistan was always going to make things interesting - turns out that issues at the Turkmenistan port, about which we can find no information, makes for an even more interesting time.
As I type this Olly & Jan are off trying to find options, which includes leaving the truck behind for a while and flying or sailing to Turkmenistan as foot passengers - Olly has to get there to meet the new people and the rest of us have visa time limits.
This was always one of the more interesting bits of the trip. :)