The character does not replicate out of the box, I haven’t tested other things like buoyancy etc…
You could easily get it replicated it’s just the logic for the character entering into the movement mode of swimming is not handled in the CharacterBP but handled in the WaterBP.
So you could set the Blueprint to replicate and replicate movement but I’m not sure how much unnecessary information is being replicated around. Also the Movement Input for swim up/down is annoying to replicate because it uses a float to affect impulse. If you have purchased you will know what I mean.
I was going to rework the player logic but using a sphere on the character to see if it overlaps with the water and do the calculations in there but then I guess this defeats the point of ‘Instant Swimmable Water’.
Hopefully Kelint can get back to us. Definitely a market for this.