Navigational Charts

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Navigational charts are available for the California coast, bays, and the Sacramento-San Joaquin Delta (which includes the navigable portions of the Sacramento and San Joaquin rivers). The main purpose of these charts is to mark waterways for deep-draft vessels. These deep-water channels are usually heavy boat traffic areas, and should never be used for anchoring or recreation. Charts show shallow reefs, sandbars, and many other underwater hazards. Boaters can also measure distances they wish to travel by using the distance scale on the chart, or the degrees of latitude on either side of the chart. The rule is one minute of latitude equals one nautical mile, no matter where you are on the earth. You cannot use longitude as an accurate measure of distance, because the scale changes with different locations around the world.

Navigational charts are not available for many lakes and rivers because they are not useful in waterways with extreme changes in water elevation, changes in the shoreline, and areas that may have a lot of floating debris. In these areas, boaters traveling in unknown waters should be extremely cautious and try to learn about any hazards before boating.

In some charted waters, such as the Sacramento-San Joaquin Delta, recreational boaters must be aware of changing waterways, because navigable waters are affected by high volumes of rain, snow melt, and tides. In these areas, floating debris and underwater obstacles can create extreme hazards.

FOR ELECTRONIC NAVIGATIONAL CHARTS, CONSULT THE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION (NOAA) WEBSITE:

www.noaa.gov and select Charting and Navigation

U.S. POWER SQUADRONS AND THE U.S. COAST GUARD AUXILIARY OFFER COURSES ON AIDS TO NAVIGATION. FOR INFORMATION ABOUT THE U.S. POWER SQUADRONS, THE COURSE ON AIDS TO NAVIGATION OR OTHER COURSES, CONSULT WEBSITE:

FOR INFORMATION ON THE U.S. COAST GUARD AUXILIARY AND THEIR COURSES CONSULT WEBSITE:

TO FIND OUT ABOUT TIDES AND CURRENTS, CONSULT WEBSITE:

and click WWW Tide and Current Predictor under the Weather Links category

www.dbw.ca.gov/links.htm

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How To Have A Perfect Boating Experience

How To Have A Perfect Boating Experience

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