cable markers for marine environments

[Lyndon Nerenberg <lyndon () orthanc ca>]

I have a couple of wiring projects coming up on salt water-going vessels and I'm curious as to people's experiences 
with different types of cable marking products in a high-humidity / salt air / bilge environment

None of the markers will be directly exposed to the outside elements, but quite a bit will be running below decks and 
will have to put up with the bilge.  Anyone have any horror stories to share?

My preference is for a direct printing system rather than stock card markers.

--lyndon