How to replace the game's original water/sea/ocean graphics?

[temporal8]

Hello, I was thinking of making new graphics in 32 bpp for the sea / ocean / rivers, with the graphic part I would have no problem but I need some guidance with the code, where do I have to look.

Thanks in advance.

[OzTrans]

Hello, I was thinking of making new graphics in 32 bpp for the sea / ocean / rivers, with the graphic part I would have no problem but I need some guidance with the code, where do I have to look.

Action-05 : Type-08 for Canals; Type-0D for Coastal Tiles; Type-12 for Aqueducts

Rivers : Feature-05 [Canals]

Ocean : See trg1r.grf - sprite 4061 change via Action-0A

[temporal8]

Thanks a lot! I'm going to investigate and if I have any questions I'll ask again.