The spelling is cupro-nickel. I couldn't find any meaningful information on antifouling paint using cupro-nickel materials. Do you have any links or brand names?
Copper-nickel (cupro-nickel) alloys have inherent long-term antifouling properties and excellent corrosion resistance in seawater. The alloy designations are typically 70-30 or 90-10 copper-nickel with differing strength, corrosion*and antifouling properties.*Some industries use these alloys for fouling resistance for cooling water intakes for power plants, etc. There have been a few metal boats built using copper-nickel sheathing for bottom plating but it is a very expensive material. The reports I've seen show excellent fouling resistance and durability over the boat's lifetime. Be very careful about galvanic corrosion of other metals near copper-nickel. Here's is one report I found.
You can find more info at www.copper.org
There have been some attempts to develop a way to apply copper-nickel to boat bottoms for many years but nothing commercially successful yet. One method was essentially peel-and-stick copper-nickel foil. Another technique is flame spraying molten copper-nickel to the actual bottom surface.
It would be a great long-term antifouling solution if someone can perfect it.