It's not generally known today, but Harbor Island used to be the town dump. Anything that anyone didn't want or need ended up at Harbor Island. That's why there's remnants of at least 4 other ship "wrecks" in that area. They're not wrecks..they were dragged there to be disposed of.
Quite a few years ago they brought in a bunch of fill dirt and basically covered up the junk. There's a bunch history buried there.
Interesting that it used to be the dump. I’ve driven over it many times on the bridge—my wife’s from Muskegon and I’ve spent a lot of summer days in Grand Haven—and it always struck me as a glorified mud bar.