Online at sea---cheapest way to get online while at sea
Wi-Fi Broadband is starting to be available in Marinas and harbors. It won''t work at sea, but if you are near a covered harbor it could be useful. I have an annual plan that cost $300, but they also charge by the month ($39.95) and by the day (7.95). I have been anchored out up to a half mile from the antennae and still been able to get a decent signal with my cheap 30mW wi-fi card. The company recommends using 200mW cards of theirs or Orinoco.
Check out www.bbxpress.net if in Washington or British Columbia.
They block UDP packets so you can''t play computer games, but otherwise it is no different from being on cable or DSL.