I've never heard of the MRS, but am well familiar with the 471.
When small, my Father told me about WWII landing crafts that were powered by 4, 471 engines. The engines were clutched and geared to (IIRC) a single shaft such that if one or more engine failed, the helmsman could still maneuver the craft by declutching and shutting down the failed engine(s).
Of course, in WWII, most sailors and technicians had minimal training and did not really know what to do if things did not work out as expected. Hence, the redundancy.
I remember my Father telling me of a time in Leyte, when he was on a landing craft when one of the 471s was running away. The craft was at dock, so the engine could probably have been clutched to the shaft to stall it out, but the folks in the engine room were not sufficiently trained.
He told me that sailors were scrambling out of the engine room, expecting the engine to disintegrate. After all personnel had exited the hold, he went into the engine room and suffocated the engine by stuffing canvas into the blower inlet.
This was WAR, folks, and the engines, though quite new, were not being properly maintained by the 19 or 20 year old sailors with minimum training. The oil bath air cleaners had not been properly maintained and sea water, SP condensation, or both, had raised the level of the oil in the oil cups high enough that the engine was drawing oil from the air filters into the blower inlet. The governor was fully shut down but the engine was burning the air filter oil and running away.
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