I think the version of the 'animated' diesel films Mr. Cook has posted are considerably later than the film about the 'General Motors two-stroke diesels' -- probably some time in the late 1950s judging by much of the style.

Is not a better example this:

https://www.youtube.com/watch?v=kC5o3VNlJns

which is the wartime 'repackaging' by Audio Productions of much of the footage of the earlier film? Admittedly it's more than a little hokey and jingoistic now, but it has preserved what I recognize as significant archival material...

I can only imagine what sort of diesel treasure trove is sitting in Warehouse 13, a few rows away from the Ark...

I wonder if a crated 16-201A is among them.

Back in the late 1930s when several classes of USN fleet submarines was being equipped with the 16-201A, there was a spare built, which apparently ended up at the submarine training school in New London, Connecticut until it was displaced by the more widely used 248/248A engines. Whatever the sourcing of the spare, it does not appear on NOd-491 (16 engines for SS172-175) or NOd-629 (12 engines for SS176-178).

A few years back I was invited to participate in a "mission" to locate specific spares in a warehouse complex. In the course of that, a large crated object in one corner of a warehouse attracted our attention, it was in a Cleveland Diesel stenciled crate. When I opened the inspection door in the crate, and directed the flashlight beam inside, it was as if somebody in the crate was shining a flashlight right back at me. The contents were a perfectly new and unused 278A stainless steel "non-magnetic" engine for a minesweeper. It looked as good as the day it was put in the crate, along with all its accessories and gauge panels. What a fabulous display it would have made for a museum. But what museum? How many marine museums display large Diesel engines outside of what are installed in the museum ship? Not many that I have seen.

PC

The first USN production 201A shipped that I see is #4621, a 16-201A for the USS Shark SS-174 (They did not go in order) shipped 12/21/1934.

Engine # 4650 was a 12-201A for the US Naval Academy shipped 12/1/1934.

Engine #5474, an X1-201A for the US Navy in Annapolis, shipped 11/4/1938 (listed as an 80HP Genset).

The next engine I see allocated for USN training is a 16-248, #5858, for the US Navy School in New London, shipped 12/31/1941.

Several of the 201A powered subs were re-powered with 12-278 and 12-278A engines, several of which were removed when they boats were scrapped, returned to Cleveland and rebuilt, and resold. Great Lakes Towing has several of these in service still.

Its pretty common to see complete spare engines, and training engines in the later 268-498 engine production listings, as well as a few experimental engines, such as the 248A and 251 engines.

My first job out of college was working for an electric utility. One of my fellow engineers manged to get a list of generating units that reported to the Entegy Information Agency. It was released about in 1988.

There are 227 diesel generating units built by General Motors listed in the database. Their nameplate MW ratings range from 0.8 to 3.2 (some are even larger; but I believe they are several units lumped together as a single reporting entity.) Most of their generator manufacturers were listed as "other."

One of the groups of diesels belonged to our utility and were located in Rayville, Louisiana. I finally got to stop by a few years ago; the plant looks to be out of service; and I could not tell if any of the units are still in place. I do agree with a pervious poster that these older generating units, both steam and diesel, are disappearing fast.