My aluminium boat was actually built up by the North Sea.
The aluminium had not shown any signs of disappearing, the only reason I found out that the prop was bronze is when i tried very hard to polish it and so saw the bronze under the surface coating.
I know that the general view on these forums
is that nothing sticks for long to a bronze prop.... but I have living proof that its not true. (the prop was 10 years old)
I love it because the prop antifouling sticks so well.... I should never have tried to improve something that did not need improving.
Would you have any idea of how I could find one of these companys in Holland
as i really regret having tried to polish it. Or would you know the term to use so i could google