Zeebrugge, 1987: the Herald of Free Enterprise left the dock with her bow doors open. Ninety seconds of flooding put her on her side. In this video: • The free-surface effect: why a few centimeters of water capsizes a ship • The chain of small failures behind the open doors • 90 seconds: the capsize timeline • The corporate manslaughter case that changed shipping law #maritime #ferry #disaster #engineering









