The Townsend Thoresen cross-Channel ferry Herald of Free Enterprise capsized outside the Belgian port of Zeebrugge on the 6th of March with the loss of 135 lives.
Z is the last letter of the alphabet and is the first letter of Zeebrugge.
Z is the last letter of the alphabet and Zebrugge most certainly starts with a Z. I think the wording must have confused the system.