Join Date: Jun 2008
Location: Tampa, FL
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To elaborate, what you linked to only works for line-of-sight transmissions. In other words, absolutely no further out than your marine VHF would be able to communicate. At these ranges, you can use a good antenna and one of the wifi amplifiers to accomplish pretty much the same thing, without the need for the ham license.
Once you get out to sea, you have to use HF or satellite communications to connect to the internet. HF does not provide the bandwidth for web surfing. Not even close. There are satellite solutions that provide enough bandwidth for web surfing, but the initial hardware cost is well into the tens of thousands of dollars range, and the monthly subscription fees will be in the thousands as well.
Bottom line: There is no current technology that will allow you to surf the web from the middle of the ocean, which does not cost so much that only cruise lines and the ultra-rich can even think about affording it.