NRS Co-Pilot. Great features - smooth and serrated cutting edges, blunt safety tip, bottle opener, etc.
Compact design is a fine fit on your PFD.
An excellent knife for freshwater boating and rescue. 
For all of your cutting needs the Co-Pilot has both super-sharp smooth and serrated sections.
The blunt tip design protects against unintentional puncture of your gear or yourself.
As another safety feature, the blade is only sharpened on the one edge.This, along with the blunt tip, helps prevent injury in a tight rescue situation.
The unique sheath firmly locks the knife in place and only lets it go when you squeeze both sides of the release.
The comfortable rubberized grip wraps around the contoured handle, giving you maximum control of the blade.
The sheath clip attaches firmly to a PFD lash tab.
Also included in the handle are a bottle opener and an oxygen tank valve wrench.

Specs
Blade Material:420 HC Stainless Steel
Handle Material:Glass-reinforced polypropylene with TPR over mold
Sheath Material: Fiberglass-reinforced nylon
Total Length: 5.75"
Blade Length: 2.25"
Weight: 4.6 oz
Blade Edge:Smooth and serrated
Blade Tip:Blunt