Andy,
I've got a little, chisel pointed Tusa knife that sits on my LP hose where I can reach it with either hand. I've also got a set of EMT shears on a bungee in my pocket.

I personally believe that those divers who carry enormous great 'katanas' strapped to their legs are probably compensating for something! IMHO 99% of the time, the only thing that you will need a knife for is to cut yourself or your buddy free from fishing line etc. A small, sharp blade that can be reached with either hand is all you need.

Of course, if attacks by underwater ninjas are a big problem in your area then by all means get a Marine/SEAL/Special Forces blade and impress them all on the dive boat when you theatrically whip it out to cut the crusts off your surface interval sandwiches!


Dive Safe.