Cement boats? I know this sounds ridiculous but they have been making the boats out of ferro cement for a very long time; and they actually have some impressive properties!
Ferro Cement is very different from “Concrete” as those boats all were plagued with problems (and most of them sank). Ferro Cement is different and holds up really well in the marine environment. The metal frame is never exposed to water and therefore remains entombed inside the cement as the boat voyages around.
The main advantages of this hull material are that it is incredibly strong, while the biggest disadvantage of the ferro cement is that the boats are incredibly heavy. A heavy boat is only a disadvantage to someone who wants to race along light winds. To me, as a bluewater cruiser, a heavy and incredibly strong hull sounds like a dream come true!
