Re: Do we still need a compass in our boats?
I do not understand how or why people keep asking how to use a compass???? This is kind of a man skill like using pliers and making fire with rocks.
The compass card is magnetic and aligns itself to the earths magnetic field. The current MAGNETIC north, which moves around more than you think, is in Greenland. The magnetic north is not, is NOT, the same as TRUE north, which is the rotating axis of the earth, the so called North Pole where Santa lives.
For precision navigation you would notice that charts have magnetic declination correction which is the difference between Magnetic north and True north but for casual navigation with the compass, on open water, simply point the boat where you want to go and then notice the bearing/heading on the compass card and hold it as you steer. If you know, from GPS or a chart, the bearing too some distant location you wish to proceed to then again, simply point the boat in that direction and continue to adjust your heading until the compass card reads the same heading as the heading derived from GPS or your chart.
This is not rocket science.
JFYI, over the millions and millions of years the old earth has been around, the magnetic north has moved around considerably, even flipping/reversing. No, the earth does not flip upside down, the magnetic pole simply reverses poles. Marine, aviation and other charts are updated for changes in magnetic north declination on a regular basis.
Also, you must adjust your compass field to your boat with the little adjusting screws. This adjustment moves little bits of metal in the compass to compensate the compass for the magnetic field of your boat. Of course, if you have a big chunk of ferrous metal next to it or something that generates a magnetic field then the compass reading could be in error or inconsistent.