With coverage from Olympia Washington to Prince Rupert British Columbia, the 2024 Ports and Passes tide and current guide is used by serious boaters and professional mariners throughout Puget Sound, the San Juans, and the extensive waters of British Columbia. Ports and Passes is more than just a tide guide, it also contains experience-based local knowledge, explains how tides and currents work, how to use secondary tables to calculate tides and currents at any secondary station, and a lot of other fascinating information. By helping boaters to be more confident in understanding the complex tides and currents of the Pacific Northwest, we aspire to make their cruising more enjoyable.