Objects intersecting in render but not in viewport So I modelled this boat and made it move across the lake using a shrinkwrap modifier and copylocation constraint(Like Chris said in this question )
Now the problem is that whenever I view this boat in viewport, there is no intersection between water and boat but whenever render the scene, the boat and water interects.
Viewport:

Render: 
Anyone have an idea why this is happening and how to solve it? I am at the end of my wits here.
BLEND FILE: https://pasteall.org/blend/16806ed8d94b4412b3db3799957febc5
it depends on your frame.
With starting frame 5 i see water in your boat in viewport...


it looks like you applied the boolean modifier. I wouldn't have done that.
And if you apply, you cannot change it afterwards.
And i think - if you apply, it is &quot;just for the moment&quot;. But unapplied the boolean modifier will also work for animated objects.