@amazeifystore: One open door. A deadly chain of failures. 🚢 When the Herald of Free Enterprise left port with its bow doors open, seawater spread across the broad vehicle deck. As the ferry rolled, the water shifted to the low side, making the roll worse. A reliable closure check could have stopped the chain before departure. What safety check do you think matters most? Follow for more engineering failures. #HeraldOfFreeEnterprise #MaritimeHistory #EngineeringFailure #ShipSafety #FreeSurfaceEffect #SafetyEngineering #DisasterAnalysis #Engineering