We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
I usually buy most everything 'Marine Grade', even if I'm not using it anywhere near water, much less near salt water. Things designed for boats (acronym for Break Out Another Thousand) are more expensive, but they are hardened specifically against UV light and salt water ingress, and often ruggedized for constant wave-related accelerations too, hence they're more durable. It's still just a question of time though, 'if' and not 'when'. You have to go the extra mile and be meticulous with your installations if you want something to last. on a boat.
It's amazing when you live near the water, seeing mild steel waste away in very little time. Even buying 'stainless' steel, one has to be careful to investigate the actual grade. Lots of so-called 'stainless' may be fine for lake water, but will still rust in salt water.