Jimmy Cornell - Ocean Atlas

Plan Your Ocean Voyages with Unmatched Precision
The Jimmy Cornell Ocean Atlas is the most comprehensive and data-driven resource available for offshore navigation planning. Designed by legendary sailor Jimmy Cornell and his son Ivan, this third edition (2023) is the result of decades of maritime expertise and cutting-edge meteorological research. Whether you're preparing for a transatlantic crossing, a Pacific circuit, or a high-latitude adventure, this atlas provides the critical information needed to make informed decisions and ensure a safe, efficient passage.

Built on Decades of Satellite Data
At the heart of this atlas is a 25-year dataset (1991–2016) of satellite-derived meteorological and oceanographic observations. This extensive period of data collection ensures that the charts reflect long-term trends rather than short-term anomalies, giving sailors a reliable foundation for route planning. Each windrose in the atlas is based on 218,000 data samples, providing an unprecedented level of detail for wind and current patterns across the globe.

Monthly Charts for Every Ocean
The atlas features 80 monthly charts covering all major oceans, offering a dynamic view of seasonal variations in wind, currents, and weather systems. These charts include the approximate extent of the Intertropical Convergence Zone (ITCZ), the most common tracks of tropical storms, and the mean location of high-pressure systems. This level of detail allows sailors to time their departures, avoid hazardous conditions, and take advantage of favorable winds and currents.

Detailed Route Planning for Popular Passages
For sailors following established ocean routes, the atlas includes 60 detailed route charts of the most frequented passages. These charts provide a clear overview of prevailing conditions along each route, helping sailors optimize their course for safety and efficiency. Additionally, monthly windgrams for major crossings offer a quick visual summary of wind strength and direction, making it easy to compare conditions across different months and plan accordingly.

Designed for Practical Use at Sea
The large-format, spiral-bound design (43.6 x 29.7 cm) ensures that the atlas is easy to use on board, even in challenging conditions. The 156-page layout is organized for quick reference, with clear illustrations and English-language labels that make complex data accessible to all sailors. Weighing just 2.2 kg, it’s a manageable yet comprehensive resource for any voyage.

The Jimmy Cornell Ocean Atlas is a 156-page, spiral-bound publication in a large format (43.6 x 29.7 cm), weighing 2.2 kg. This third edition (2023) is based on 25 years of satellite-derived meteorological data, featuring 80 monthly ocean charts, 60 detailed route charts, and windgrams for major crossings. All content is presented in English, with clear illustrations and windrose data based on 218,000 samples per chart.

For over four decades, the creators of this atlas have been at the forefront of offshore sailing and navigation planning. With a legacy of circumnavigations, transoceanic voyages, and best-selling maritime publications, their expertise is trusted by sailors worldwide. This atlas reflects their commitment to providing accurate, practical, and accessible tools for safe and enjoyable ocean navigation.

• Unmatched accuracy with 25 years of satellite data for reliable route planning
• 80 monthly ocean charts covering global wind, current, and weather patterns
• 60 detailed route charts for the most frequented ocean passages
• Monthly windgrams for quick visual reference on wind strength and direction
• Large-format, spiral-bound design for easy use on board
• Clear, illustrated charts with English-language labels for accessibility
• Ideal for sailboats, motor yachts, and commercial vessels