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Covers the San Juan and Gulf Islands, as well as the Straits of Juan de Fuca and Georgia.
Used with the yearly Washburne's Tables, which will refer the reader to the correct chart in the Atlas for the date and time in question. (Sold separately; see Table.)
The atlas consists of three parts:
• Part A: charts for determining the approximate tidal stream pattern at a specified time
• Part B: charts for determining the change in tidal stream flows over a 25 hour period of a typical large or small tide.
• Part C: shows the current flow patterns for three hours before low water, at low water, and for three hours after low water for small, medium, and large river discharges
Canadian Hydrographic Society, PB, 212 pp.