In our third part of this series, we are going to take a quick look at a special engine, the 12-567CA. Now, some of you guys may be saying “567CA? No, you mean the 567AC, an A engine with C upgrades!”. Well, no. We talked about those in Part II. The 567CA is a one-of-a kind model, with one purpose: Replacement of the 567ATL. EMD saw all of these engines that were recycled after the war, and devised an upgrade plan for them. Instead of just upgrading the engines to AC specifications, the 567CA was a full, in-kind replacement engine, which utilized some of the parts off the 567ATL, however offering the new and stronger “C” block, liners and heads. 

This intro page from the 567ATL parts book gives a bit more of a breakdown as to the flow of 567ATL engine history. I have never seen reference to the AE or EA engines anywhere else. 

The first time I saw one of these CA engines, I was not quite sure what I was looking at. It looked like a “C”, but yet still had the older style coffin cover deck lids, and the old smooth blower ducts. It was not until I later saw an engine that still had its nameplate, showing it as the “CA”. Unfortunately, I do not know much about this program, other then it started around 1962. I have no brochures or ephemera for it in my collection outside of the parts book. If anyone happens to have anything, please share! Lets take a look at a few boats with the CA engine. 

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We saw Meyles tug Triton in Part II, now we will take a look at another tug in their fleet, the Jupiter. Jupiter was built in 1902 for Standard Oil Company, as their tug So. Co. #14. Naturally, she was built as a steam tug. Meyle purchased the tug in 1939, and ran her as a steam tug for a few years, before repowering. The tug originally received 567ATL N-343 from LST-428. Photo from the Dave Boone Collection

The Jupiter was repowered with her 12-567CA sometime in the early 1960’s. Some of the components recycled from the original LST engine include the complete reverse/reduction gear, Marquette governor and drive, the blower ducts (and likely blowers originally), the entire upper deck cover assembly and the side outlet, LST exhaust manifold. 

Meyle was sold to McAllister towing in 1980. Jupiter briefly worked for them before being sold to Eastern Towboat in Boston, MA where she spent the next 10 years working commercially. 

The Jupiter today is under the care of the Philadelphia Ship Preservation Guild. Jupiter is one of the last remaining historic tugs preserved in the country, having lost so many in the last decade. The Jupiter is currently having a fundraiser in order to get the tug operational again, and make a trip out to escort the Battleship New Jersey when she is towed to the shipyard next year – Jupiter having been one of the tugs used to launch her back in 1942. Check out their fundraiser here: https://www.facebook.com/donate/1292252804809966/969690144657280/ If you can, be sure to donate, be it money, time, or if any of you readers may be able to help with some of the parts they are looking for. You can follow them on their facebook page here for more updates: https://www.facebook.com/TugJupiter

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Another Meyle tug to receive the 567CA engine was their tug Trojan. Trojan was built in 1912, again as the steam tug Caspian, for the P.F. Martin Company – a small Philadelphia tugboat company. Meyle purchased the company in 1948, with the tug having now been renamed the Trojan. She would receive the 12-567ATL, engine N-703 out of LST-214. Photo from the Dave Boone Collection

The Trojan was sold to the Great Lakes in 1981, and eventually would up with Egan Marine Towing in Chicago. The tug, now named the Robin E. was used for light barge and ship assist work in the Chicago area before being laid up. Egan was dissolved and the tug languished for a few years before being scrapped in 2013. One of the things reused with these engines was the virtually bullet proof Falk horizontal offset reduction gear. Photos by Franz A. von Riedel, Click for larger
https://gltugs.wordpress.com/robin-e/
https://tugboatinformation.com/tug.cfm?id=5328

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Great Lakes Towing would repower several of their tugs with the 567ATL engine in the 1950’s, and was also one of the larger fleets to replace those engines with the 567CA – I believe all but one actually was upgraded. One such tug was the America (later renamed the Wisconsin and Georgia, she was renamed back to America this fall). The tug, built in 1897 is currently one (if not THE) oldest working tug in the country, based in the Port of Monroe, MI. The tug is rather unique, and one of the only “G Tugs” to have a full deckhouse. The tug was repowered from steam in 1950, with engine N-813 from LST-141. The tug received her current CA engine in 1963.

All of the “G Tugs” use a tiller for steering, controlling a quick acting hydraulic steering system developed in house by Great Lakes Towing in the 1940’s. 
https://gltugs.wordpress.com/wisconsin/
https://tugboatinformation.com/tug.cfm?id=12796

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The last tug we will take a quick look at is the Anna Marie Altman of Zenith Tugboat Company. The tug was built in 1950 by Alexander Shipyard – who used almost exclusively 12-567ATL engines in the tugs they built. The tug was built as a New York Canal Tug for Seaval Tugboat Co. The tug eventually wound up with Tracy Towing Line in New York, moving coal barges. Photo from the Dave Boone Collection

The tug would bounce around various owners in the Great Lakes and finally would up with Zenith Tugboat Company in Duluth doing ship assist work. The Anna Marie Altman was laid up in 2010, and was scrapped in 2021 by Purvis Marine. Photos by Franz A. von Riedel, Click for larger
https://gltugs.wordpress.com/anna-marie-altman/

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We will conclude this series with Part IV showing some post war LST uses, and a further look at the museum ships. Stay tuned!
Be sure to check out the full series:
Part I – The EMD 567ATL: The power behind the Large, Slow Target (WWII LST)
Part II – The EMD 567ATL: Repowers
Part IV – The EMD 567ATL: LST Survivors