Currents change approx each hour and the waterway is much effected by NW winds. Canal depth 8 metres, width at bottom 21 metres and 24. 6 metres at sea level. Max width of transiting vessel is 18.3 metres and draft 7.2 metres. Headway below rail bridge is 58.8 metres and below road bridge 54 metres.
Canal is lighted at night.
Maximum speed of vessels navigating the canal is 6 knots. The Canal is operated by The New Company of the Corinth Canal, based at Isthmia Corinthias, who will furnish tariffs upon request. Night pilotage compulsory for all ships over 100nrt. In all cases the maximum width is 18.3m, draft 7.2m. Night transits are made possible due to extensive natrium vapour lights.