On Water - Vanilla-Expanded/VanillaExpandedFramework GitHub Wiki
PlaceWorker_OnWater allows you to make a building that needs all its cells to be on water
PlaceWorkers need to go on the <placeWorkers>
tag of the Building. For example, this is the tidal generator in VE Furniture - Power
<placeWorkers>
<li>VEF.Buildings.PlaceWorker_OnWater</li>
</placeWorkers>