Not a chance a body would lose all limbs and the head in such a short time.

https://blogs.scientificamerican.com/news-blog/how-long-do-d...

That could only be deliberate, so if it is Kim Wall's body then Madsen will have a lot more explaining to do.

There's an awful lot of sea and a very small number of propellers. Plus if the body is floating, it would not be anywhere near anything but the smallest outboard prop. Also, if you look at the shape of a rotating prop, it could clip you, or mangle you a bit, but for most propellers the leading edge pushes you away so won't act as a cutting device unless you push against it or it's at high speed. I would think it very unlikely a propeller would do what was claimed.

If you cut head and arms in the same level (in a single clean cut) maybe, but is not the common way. Dolphins have similar sizes to a human body and had accidents with propellers all the time; they lose tails or heads, but not tails, heads and arms at the same time.

I actually came back to make sure this update had been posted...

Generally I try and avoid speculation but this is so freaking crazy that its hard. Did he just lose his mind? did she have a stroke or hit her head and he freaked out? What the hell...