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This book has been used for 30 years, updated periodically as needed. More than 20,000 students have successfully learned ocean navigation from these materials and gone on to cross oceans or circumnavigate the globe. This book covers how to find position at sea from timed sextant sights of the sun, moon, stars, and planets plus other routine and special procedures of safe, efficient offshore navigation. No previous navigation experience is required. The only math involved is arithmetic (adding and subtracting angles and times). This is a practical, how-to-do-it book, which also includes...

Use slack times and maximum current speeds at Wrangell Narrows from the NOAA Tidal Current Tables to select the appropriate chart for specific dates and times.

An ideal resource for planning routes throughout Southeast Alaskan waters using sequential charts to predict how the current flow over large regions changes with time.

For use underway or when planning passages in the future.