I live a few miles from the Atlantic in an area with lots of marshs and swamps filled with brackish water and salty air. I canoe and camp in these environments. The Spyderco H1 knives are what I use. I have Aqua, Pacific and Atlantic models. They are all plain edge and that works best for my general cutting needs. I like the yellow handled models since not losing my knife is much more important than being "tactical" is for me. I have tested the Aqua by washing it in seawater and leaving it on my deck in hot, humid Summer weather. There was absolutely no oxidation...It was amazing. If your knife is primarily for cutting rope, the SE edge may be best. I like the PE for general use and it's easier to sharpen.