Porto Lago (according to this postcard of the late 1950s somehow related to Komotini, although the latter was 28 km away!) was of course a port of call of one of the famous subsidized routes (agones grammes) of that period...
I sort of remember the schedule: Skyros, Aghios Eustratios, Lemnos, Samothraki, Alexandroupolis, Porto Lago, Thassos, Kavalla. Heroic days!!!
Ellinis, anybody? Do you have information on this route? Do you have the names of ships that were going all the way up north?
Porto Lago.jpg