VESSELS TO SOUND THEIR HORNS TO MARK INTERNATIONAL WORKERS DAY Port of Cork invites mariners to salute cross community effort during Covid-19 crisis. The Port of Cork has invited vessels across Cork Harbour to sound their horns at the stroke of midday next Friday, May 1st, to officially mark International Worker’s Day. The initiative aims to salute the approximately 1.6 million seafarers globally who continue their efforts to supply food, fuel, goods and vital medical supplie