Who knows Detroits? 4-53, 6V-53, etc?

At an earlier time in my life, when I was commercial fishing and working on commercial boats I helped remove the Gardner 8L3B (basically a freight train engine, about 8 feet long and very old technology) from this boat and retrofit a 12v71. I believe the detroit diesel was twin turbo and supercharged. It was a very cool engine.

The Sans Peur...... french for without fear.FB_IMG_1500953960230.jpg