Description:

In vanilla TS, the GDI APC will display a different art file (voxel) when it moves over water. This effect cannot be replicated on other units for some reason. Adding this alternate art option on a unit level, should allow modders to make more use of the amphibious vehicle option without having to resort to hover units to prevent art discrepancies.

Possible Implementation:

New tag: "WaterImage=N" (N is an art.ini entry)
When the unit is over land (default), it uses the regular Image= value to display the unit art. If the "WaterImage=N" field is present, the unit will display that new art image whenever it is inside a cell defined as TerrainType=Water