Although not a shipwreck, this crane, caterpillar front end loader and debris field are cargo that ended up on the bottom of Lake Michigan as result of a maritime mishap sometime in the 1980s. It is still common practice to use barges, cranes, and front end loaders for harbor improvements and that this debris field is the result of that. It is theorized that this site was created when a barge carrying the cargo had flipped over during heavy seas dumping its contents. Or that that the barge had encountered seas so heavy that the cargo shifted and fell over the side. Or finally, that the debris field was dumped into the lake intentionally.
The crane and front loader debris field is a popular dive site with the crane sitting upright and the Caterpillar front end loader laying on its side on a pile of slag and rip rap in 130 feet of water. There are many tools and other objects interspersed between the rock pile.