Deltaromeopapa

I recognise this is a rather old topic but felt I had to add a little. As an engineer interested in buying a NB I have been reading everything I come across. So to be clear I am not a NB specialist. However steel is a generic term for a ferrous alloy which as a minimum contains iron and carbon. Particularly during the 90s and early 2000s there was a lot of imported steel and some of it was of dubious quality having been imported from less well developed nations who were manufacturing from scrap. Having changed job and not being involved in that branch of engineering I cannot comment on what happened after about 2006. The quality of the steel can have quite an impact on its resistance to corrosion. I somehow doubt it is possible to determine what a 20 or 30 year old, or older, boat is made from. But it may explain why some makes corrode more than others. Further I watched a video about someone blacking their boat with 2 pack which is supposed to last for much longer than bitumen. Having dry docked the boat it was pressure cleaned and the epoxy applied. The boat was resting on several large balls of timber and them floated after blacking presumably to roam the canals for a few years before again receiving further protection. What about the area of hull not accessible due to resting on the timbers? Need I say more. All through this thread the advise has been that it is all about the maintenance. I concur whole heartedly!