Famous Women Pirates
Information about that rare thing - women pirates.
http://www.elizabethan-era.org.uk/famous-women-pirates.htm
Pirates - Life at Sea
National Maritime Museum site with excellent historical background to the Pirate life at sea.
http://www.nmm.ac.uk/server/show/conWebDoc.159
Songs of the Sea
Great site with tons of useful information on sea shanties and songs of the sea.
http://www.contemplator.com/sea/index.html
The Pirate Song

The Pirate Song site tells you loads about...pirate song.