I've noticed in my last game that one barbarian ship wandering through your territory 3 hexes away from a city can blockade that city and shut off the trade routes going through the harbour. This can happen even if the blockading ship is on the wrong side of the landmass and has no means to attack any notional route from your city to the capital.
If your capital is blockaded you can lose your trades routes to every city this way, if you're relying on harbours. Given that it's far more difficult to exclude units from sea than it is from land, has anyone else seen difficulties with blockades?
If your capital is blockaded you can lose your trades routes to every city this way, if you're relying on harbours. Given that it's far more difficult to exclude units from sea than it is from land, has anyone else seen difficulties with blockades?