Cruising Guide to Puerto Rico The most comprehensive guide ever written covering Puerto Rico and the Spanish Virgin Islands. Its 50 full color Charts containing extremely accurate data are based on independent surveys personally conducted by the author, using a computor hydrographic System. In addition, it contains detailed piloting instructions, GPS waypoints, Photos, approaches and routes, anchorages, services, dive sites, history, index, bibliography, and more. It will greatly enhance your cruising experiences in this region by giving you valuable information based on actual experience, and local knowledge.