GarageBoy said:
I concur, this is probably your best bet for sailing. A fixed blade is quick to grab and use in an emergency, and no fumbling trying to open a folder especially with wet hands.
My other thought if you must get a folder....Talonite -N- Titanium are non corrosive (i.e. TNT)

But I would sure hate to drop it!
But seriously, here are more details on the Benchmade.
Benchmade River/Dive Knife
NEW! A reality of performance fueled by the incessant exposure to liquid assets in an otherwise dry world for some.
H1 steel is impervious to the elements and 100-percent corrosion resistant.
Blade design is sharp enough to cut, yet blunt enough to be predictable. Partial serrations ravage rope or fibrous materials with ease.
Handle slabs are machine sculpted to provide sufficient grip without overcrowding of space.
Sheath design escalates performance to optimum levels with a unique three-point secure system and lash-tab clip attachment.
Get out, get wet and release the amphibious urge!
Features of the 100SH2O River/Dive
Blade Length: 3.25"
Blade Thickness: 0.12"
Blade Material: H1
Blade Hardness: 58-60
Blade Style: Bull Nose
Weight: 4oz.
Clip: Metal Clip (sold seperately)
Lock Mechanism: Fixed
Overall Length: 7.5"
Closed Length: 7.5"
Sheath Material: Kydex® Fitted
Choose from these models
100SH2O- Fixed blade/ComboEdge/YELLOW HANDLE/Kydex fitted sheath
100SH2OBLK- Fixed blade/ComboEdge/BLACK HANDLE/Kydex fitted sheath