How to Read a Nautical Chart

Reading charts depends on the kind of chart you wish to read. When reading nautical charts so as to pilot the boat safely, there are numerous techniques and basics to be learned.

First of all, you need to be familiar with the basic chart symbols and the foundations like water depth, channels, landmarks, buoys and lights, obstructions and other information. The chart title offers general information on the type of chart ad most often represents the navigable water resource, unit of measurement and details of the projection type.

You also require to known the basic abbreviations made use in the chart that can be acquired from the notes provided in the chart. You should also acquire knowledge in reading other navigating information such as anchorage areas and special caution notes. Different charts are to be used depending upon different navigating areas including sailing charts (for open ocean navigation), coastal zoom charts (for navigation through inland waterways, harbors, or bays), harbor charts, small craft charts (conventional light paper chart), etc.

Nautical charts are read using lines of longitude and latitude. Latitude lines running vertically on the sides of the chart indicates North and South direction with Zero equator, while longitude lines running horizontally indicates directions East and West with Zero point being the prime meridian.

You can locate charts by comparing the number assigned to them and can also identify the last updated date with the help of the edition number provided on the chart. There are underwater contour lines, color codes and numbers to identify the depth, bottom characteristics and soundings of the navigating ocean. Compass roses printed on the charts indicate measuring of direction and is used to plot the course while in navigation.

You will also find drawing that indicates distance scale provided in yards, nautical miles or meters. You also require to learn reading other basic components provided in the chart that indicate lights, buoys, and obstruction while navigating. You should also be aware of the hazards and interesting landmarks on the area of boating for efficient charting. Purchase the latest version of nautical chart to start reading them form marine supply stores online.