Investigators said the engine failure was caused by a “dead centre event” where the high-pressure steam piston came to rest at the top of its travel when the engine was stopped – known as the dead centre position – preventing the engine from running.
“The report recognises the extensive work undertaken by Waverley Excursions since the incident back in 2020, including a full review of the safety management system.
Fewer people might have been injured if passengers had been warned ahead of the impact, a Marine Accident Investigation Branch (MAIB) report said.
The MAIB said since the crash the ship’s operator, Waverley Excursions, has carried out an internal safety review of its management system.
Paul Semple, Waverley Excursions general manager, said: “I welcome the publication of the MAIB report and support its findings and conclusions.