You are absolutely right.
Hermes (built in 1915, 2,625 tons) was the first of three vessels with such a name. She was with
Epirotiki from 1955 to 1960. Before that she was
Jupiter and was based in Bergen, Norway. She was doing the route
England-Bergen.
Nice ship (see attached). But I had not mentioned her before because I do not believe she was doing normal passenger routes in Greece. In fact,
http://www.theshipslist.com/ships/lines/bergen.htm presents her as a cruise ship
What happened to her after 1960?