[PAR35]

allided or struck something underwater

Maybe, but from the picture it doesn't looked to have been very well maintained. Over 70 years old.

[AnAmericanMother]

Looks like consequences of deferred maintenance to me.

And you can bet that the hull underwater looks much worse.

[crz]

A lot of them are from around the early 50s

Until 2022, the last freighter built for the lakes was constructed almost 40 years ago.

The ww2 boats/freighters still working are mostly pushers now.