i find a good free game,it is a the first 3D nautical online game,the name is Voyage Century.
Do you like sea war? Drive a ship and adventure in the sea. Make full use of your wisdom, getting more and more gold. What is the better, all of these are in a 3D space. Voyage Century can offer you all of these. Let’s play it together.
http://www.voyagecenturyonline.com/attachmentFile/2006-11-27/20061127041557.jpg
http://www.voyagecenturyonline.com/attachmentFile/2006-11-28/20061128052217.jpg
http://www.voyagecenturyonline.com/attachmentFile/2006-11-28/20061128051958.jpg

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Voyage Century:http://www.voyagecenturyonline.com/index.php?id=2
Myth War:http://www.mythwaronline.com/index.php?id=8