Some 250 shipping executives from 24 companies unraveled their football talent on the turf of Greek Superleague champions Olympiacos during the Posidonia Shipsoccer Tournament, the last of the three sporting events which comprised this year's recreational and networking calendar of the Posidonia 2012 Exhibition week. The five-a-side event, which was organized by Posidonia Exhibitions S.A and Naftiliaki Filathliki Enosis, attracted over 300 spectators who enjoyed a football feast…