Er OK, so they are more like disolved - or erroded I think is the tech term, one of those greenie wires came off - the music didnt stop so we didnt either - until we lifted the boat out !!
Type 'steeldevelopments' (one word) in the search box, and search, you will see you are not the first nor will be the last to look for this kind of service. This search will lead you to others that may be of interest to you anyway. Good luck.
<hr width=100% size=1><font color=purple> "You only see what you recognise, and you only recognise what you know" <font color=purple>
CJR Propulsion, Bitterne S'hampton made my last pair. They were the best price of several others I approached and unbelievably helpful in working out what I needed.
<hr width=100% size=1><font color=blue>A convert to steel boats and displacement cruising - the only way to go</font color=blue>
Try Teignbridge Propellers Ltd (sorry, don't have their telephone number). But beware, get a friend to call as well to whoever you go to with the same details of the boat (horsepower, weight in cruising trim etc.) and see if he gets the same prop design offered. This is not always the case; some companies are a little cavalier with what they recommend. If you try three or four companies and get the same response then you can be reasonably confident that you have the correct size and pitch props. I speak from bitter experience.