Re: printing charts ?
Don, a cartographer is the person who actually draws up an original chart. What you're talking about are authorized resellers, simple merchants, not cartographers in any way. Some inks are more water-resistant than others, and charts can be printed on plastic rather than paper, and the sprayed or laminated as well, if you want them deamnd-printed and water-resistant as well. I have no idea who is offering those extra-cost options or what they'd charge, but compared to setting up a press run and all the costs of regular lithography...Print 'em, let up drip, replace 'em. That's what waterproof vinyl chart pouches are for.