Could be worth looking into a Boye Knife. Definately more marine use, with a shakle key and marlinspike. I was looking at one for a while because I do a lot of knot tying as a hobby, but they're not quite as compact as other folders. Also couldn't find a local dealer at all to hold it first.

But, the advantages are the steel is something a bit different that gives it a great rope cutting ability in a straight edge. That's something to think about on a boat. High corrosion resistance, as expected. Bright handles are also available.

If you do end up with one, let us know how you like. I'm still curious.

J