Still got an unexpected issue as I forgot to add a killplane under the sea plane...As a result, the final a few frames crash MAYA easily(I believe the container is way too big).
The cache is about 150GB. 0.2resolution. I wanted to add motionfield but it takes way too long to calculate, so I gave up on it.
The ship is the emissionregion, but this got issue. The process of solving it, see this: https://forums.autodesk.com/t5/maya-f...
The first test(low res and less animation) please see this:    • Maya 2018.2 Bifrost large scale(90m) ...