The Marine Historical Society of Detroit has books, journals, and information on Great Lakes maritime history. The maritime heritage of Salem, Massachusetts is documented in these pages. Pages devoted to individual battles are a new sight on the Internet. First US Warships in Tokyo Bay , August 1945. Not exactly a battle, but close.
Some biographical information is available on the Internet.
Napoleon at the Internet offers links to numerous Napoleon sites. Antigua and Barbuda have their own site about Nelson history . Here's a source of information on Henry Hudson , the 17th century explorer. Letters of marque are the primary focus in this short collection of documents from St. Andrews University in Scotland. Interesting site of specific information .