That is a great story!
Thanks!
There is more — the hull was kevlar armor plated on the INSIDE of each engine room. An overspeeding “runaway” Deltic could explode with the force of a 500 lb bomb, so the kevlar armor plating “contained” the explosion and prevented the hull FRom getting holed!
AND, the doors to each engine room were thickly armored as well. Operators did not go into the engine room when the Deltics were above idle speed.
As you can tell, I was absolutely captivated by the Deltics!