Ore patches now spill over into the sea as submerged variants. Dredge them up with new floating hardware, and build deeper into the blue with water-placeable refined concrete.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Map generation and terrain modification.
New Ores and resources as well as machines.
FYI, I enabled dismantling factory and got this conflict with dredgeworks. DF was the only mod I added.
https://postimg.cc/5X8B0MQK
Try limiting belt flotation and see if it helps.