The 1958 Newark Bay (NJ, USA) Train Derailment. A driver fails to obey red signals ahead of a movable bridge, causing his train to fall into the water. 48 people die. A link to the full story in the comments.
NTSB investigation has determined that 5/27/22 engine fire and over $1 million in damage to the OSV Ocean Guardian was caused by technicians installing a wrong size engine bearing.
January 13, 2012. The cruise ship Costa Concordia runs aground off the coast of Giglio in Italy. Here it is being salvaged on January 11, 2014, two years after it capsized.
The derailed cars of the Coromandel Express train after a multi-train collision with the Bengaluru-Howrah Express and a Goods Train. The mishap occurred on 2nd June, 2023 in Odisha, India. (Cause unknown, rescue ops underway, fatalities reported, link in the comments).
25 years ago today, in Eschede Germany, a ICE 1 train derailed and crashed into a bridge. The bridge then collapsed and crushed the train, causing 101 casualties. The derailment was caused by a mishaped wheel run.
The 2020 Livraga (Italy) Train Derailment. Faulty wiring in a set of points and inadequately performed maintenance work cause a high speed train to derail. 2 people die. A link to the full story in the comments.