Do you know that your nautical GPS offers a way to warn you when you sail too close to rocks, coral, or other “ship killing” dangers. Make tough sailing navigation passages less difficult with the magic of proximity circles. Put these a few easy steps into play today on your small cruising or maybe racing sailboat.
Most handheld marine GPS receivers (traceur gps espion) have a proximity function that allows you to set up a good waypoint surrounded by a circle. You can set an burglar alarm to sound if you touch the circle’s edge. This offers you time to take action and turn toward deeper normal water. Follow these five steps for navigation safety.
– Look over your nautical chart
Plot your course traces onto your paper navigational chart. Even with the great accuracy for GPS and chart plotters, vector displays often never give enough detail when sailing close to hazards.
installment payments on your Set up hazard waypoints
Measure the navigation latitude along with longitude of the center of the hazard. For a cluster about rocks or coral, use the approximate center of the chaos as the center waypoint. Write each hazard waypoint down into a logbook along with the lat and long.
3. Identify your “circle-of-safety”
Use a plotting compass to measure typically the radius of the circle. Push the needle point in the waypoint. Scribe a circle that surrounds the danger. Increase at least 1/2 of that radius for safety.
For example , in case the radius of the circle that surrounds the hazard ended up being 1 nautical mile, then your proximity circle should have some radius of at least 1 . 5 nautical miles. Increase this kind of distance as you see fit, based on maneuverability, point of cruise trip, wind, and current.
4. Program each hazard waypoint
Enter each hazard waypoint into your gps. Label every single hazard waypoint so that it cannot be confused with a non-hazard waypoint. For example , you might use Z-1; Z-2, or any other exclusive name. Double check each hazard waypoint’s latitude and longitude with the navigational chart before going to step 5.
5. Established and test your proximity circles
Check your manual for information to access and set up “proximity” waypoints. Access the area menu and set the alarm toggle to “on”. Proceed to the menu to select each of your hazard waypoints.
Set your own personal circle radius with the toggle (up-down) key. Finish a single hazard waypoint; then page over to the route screen. Verify to make sure the computer has drawn the correct size proximity ring. Repeat this method for all other hazards.