cable markers for marine environments

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