The primary areas of concern for voyaging yachts are the following (click on location for specific info):

	Gulf of Aden and Yemen Coast
	Indonesia
	South China Sea near the Philippines
	Solomon Islands
	Venezuela
	Colombia
	Malacca Strait

Here is the official list (with verbatim notes) of piracy-prone areas in the Eastern Hemisphere from the IMB Piracy Center in Kuala Lumpur, Malaysia (+603 2031 0014; fax +603 2078 5769; imbkl@icc-ccs.org.uk) as of March 2003:

	Bangladesh: Chittagong and Mongla at berth and anchorage. Ships have
	Gulf of Aden
	India: Chennai, Haldia, Hoogly and Kakinada anchorages.
	Indonesia: Belawan, Balikpapan, Bontang, Panjang, Samarinda, Santan, Tarahan and Tanjong Priok (Jakarta). Ships have reported numerous Berhala, Gelasa Straits.
	Madagascar: Diego Suarez
	Malacca Straits: Avoid anchoring along the Indonesian coast of the
	Malaysia: Sandakan
	Philippines: Batangas
	Solomon Islands: Honiara
	Somalian waters: High risk area for hijackings. Ships not making
	Tanzania: Dar es Salaam
	Thailand: Koh Si Chang
	Vietnam: Vung Tau

A new book on yacht piracy has just been published (2003): Pirates Aboard, by Klaus Hympendahl.

An excellent article on piracy in the Red Sea area was published under the title "Danger Zone" in July 2000 by Yachting World maagazine, a British publication.  

Jimmy Cornell's website Noonsite publishes regular piracy updates.

The Red Sea Pilot, published by Imray, posts on its website a regular piracy update for the Red Sea and Gulf of Aden, reproduced here as of December 2002.

A database about yacht piracy is being established by the International Sailing Federation at http://www.isaf.co.uk.  Reports should be submitted, with appropriate documentation, to ISAF at piracy@isaf.co.uk.  Another piracy reporting center is at www.iccwbo.org.

Other firsthand reports of piracy against cruising yachts worldwide are available online from the Seven Seas Cruising Association.