mike_s
Contributor
You are exactly right, Mike. Any boat with an Inmarsat or Irridium system (by far the most popular) have the option of using chatcards for their crew, and customers if they desire. Chatcards come with a pre-set number of minutes or bytes, depending on the value of the card. The passenger buys the card (usually in denominations of $25, $50, or $100), scratches off their PIN number, and uses their card in the manner they would like. The card is good for 2 years once activated, and it doesn't matter what phone it is used on as long as the service provider doesn't change. That chatcard may be bought and activated prior to departure, saving the passenger a few bucks.
It's kind of funny to see someone who bought a $25 dollar card's face when they run out of time 10 minutes into a conversation. "What do you mean you only get 10 minutes?" "But sir, I told you it was $2.50 per minute". Better yet is the guy who just hits the send/receive button on his computer, and downloads 6 or 7 Mb of spam. "Sir, I told you to log onto webmail."
Frank
or worse, you have to deal with a cheap-skate who bought a $25 card and only used $18 of it and wants you to refund him the other $7.
And you waste $25 of your time trying to explain to him to him.