Depth Masking (fake holes) in HDRP ?

I can’t find any information on the subject that actually works in HDRP (latest version).
How is this supposed to be done in HDRP?
Like masking the inside space of a boat in water, or making fake holes depending on render orders.
I know that HDRP is still WIP, but surely it’s possible?

Ive tried the normal method from SRP, but you can only see the camera background color, no geometry.