These detailed electronic nautical charts look just like paper charts when displayed on your Garmin chartplotter. Features include shading between depth contours, spot soundings, navaids, port plans, wrecks, obstructions, inter-tidal zones, and more. BlueChart offers much larger coverage areas for half the price.
MapSource BlueChart Washington to Northern California covers Point Sur, CA through Cape Flattery WA, includes San Francisco Bay, Coos Bay, the Columbia River, the Snake River and Juan de Fuca Strait. It contains very general coverage of Seattle and Puget Sound.