The deadliest ferry accident in history remains the sinking of the MV Doña Paz in the Philippines on December 20, 1987. The ferry collided with an oil tanker, the MT Vector, resulting in a massive fire and the loss of an estimated 4,386 lives. This remains the deadliest peacetime maritime disaster, far surpassing the Titanic. In more recent European history, the MS Estonia disaster in 1994, which claimed 852 lives due to a bow door failure in heavy Baltic seas, led to a total overhaul of international "Ro-Ro" (Roll-on/Roll-off) ferry safety standards. In 2026, the maritime industry frequently references the MV Sewol tragedy in South Korea (2014) as a cautionary tale regarding illegal modifications and poor cargo lashing. These accidents have driven the development of modern "Smart Stability" systems and real-time passenger tracking technology used on ferries today, ensuring that while ferry travel is statistically very safe, the lessons from these historical tragedies are never forgotten by naval architects and crew members.