How can you determine direction using the sun?

Understanding the Sun’s Path

When you’re stranded on a life raft, it’s essential to know how to use the sun to determine direction. The sun rises in the east and sets in the west, but its path is not a perfect straight line. In the northern hemisphere, the sun appears to move from south to north during the day, and in the southern hemisphere, it moves from north to south. This means that the sun’s shadow will shift slightly as the day progresses.

Using an Object to Determine Direction

To use the sun’s shadow to determine direction, you’ll need an object with a vertical surface, such as a pole, a flag, or even a piece of equipment. Place the object in the ground or attach it to the life raft, and mark the end of its shadow with a small rock or a marker. Wait for about 15-20 minutes, and then mark the new end of the shadow. Draw a line between the two marks, and the midpoint of this line will indicate south. This method works best between 9am and 3pm, when the sun is overhead.

Adjusting for Latitude

Keep in mind that the sun’s path changes depending on your latitude. In the tropics, the sun is overhead around noon, while at higher latitudes, it’s lower in the sky. If you’re near the equator, you can use the sun’s shadow to determine direction year-round. However, if you’re at a higher latitude, you may need to adjust your method for the time of year. For example, during the summer months in the northern hemisphere, the sun’s path is higher in the sky, making it easier to determine direction. In the winter months, the sun’s path is lower, and you may need to use other methods, such as observing the stars or using a compass.