This is instructional video of masking water out of boat and ship hull using Unreal Engine water plugin. There’s no need for any third-party plugin and the same technique can be applied in UE5 and UE4.
https://dev.epicgames.com/community/learning/tutorials/b79Z/unreal-engine-masking-water-out-of-boat
I follow the video step by step but it doesn’t work for me, any idea where the problem might be?