The QE2's Colossal Heart Transplant: The Epic Diesel Swap That Saved a Legend

Editorial Summary

Maritime historian Chris Frame explores the significant technical transformation of the QE2, focusing on its transition from steam turbines to a modern diesel electric power plant during a 1980s refit. The video details how the ship utilized nine medium speed diesel engines, each roughly the size of a London double decker bus, to generate 94.5 megawatts of electricity. This power was divided between hotel services and two massive propulsion motors built by GEC England, which were among the most powerful marine motors of their time. Frame explains that the ship controlled its speed and maneuverability through controllable pitch propellers rather than changing shaft rotation, allowing the vessel to move in reverse by adjusting blade angles. The presentation also covers the ship's auxiliary systems, including heat recovery boilers that repurposed engine exhaust for steam and an advanced stabilizer setup designed for the rough Atlantic. The diesel power plant remained operational until the ship was retired and eventually shut down in 2012.

Written by TripBacon from this video's transcript.