Fine, that's make sense, Salt deposit could happen on any kind of thru-hull covers.
Thanks Gonzo, this boat just need to fulfill the normal marine rule, like IMO, CE, ABYC etc. You give me another way to think, because this is a...
looks nice,how's it works?
I'm going to build a 70ft fast motor boat, we need the weight of the boat as light as possible, I need engineering's comments for pipes in bilge...