| Understanding the depth/fish finder | | | | will be. It will determine what type of lure or bait |
| The depth finder originated in the world of the | | | | you use. |
| submarines. We know it as SONAR or "Sound | | | | In most cases you will look for underwater terrain |
| Navigation Ranging". You might remember | | | | that tends to be a location where fish congregate. |
| watching a movie that included submarines playing | | | | This can be stumps, logs, underwater brush, |
| war games. | | | | drop-offs and channels. Fish activity might also be |
| In terms for the rest of us, this is how SONAR | | | | an indicator to the experienced fisherman. A tight |
| works. Pulsed sound waves are sent through the | | | | ball of bait fish might indicate that a predator fish |
| water. When the wave strikes an object, like the | | | | might be nearby. |
| sea bottom, a fish, the Loch Ness Monster or | | | | SONAR cannot tell you what kind of fish is |
| some other type of structure, the wave gets | | | | swimming below you, but you can determine, |
| reflected back to the transducer. The transducer | | | | based upon the features underwater and the |
| then organizes the information and sends it to the | | | | behavior of the fish, what is a bait fish and what |
| display. | | | | is a fish you would target as to catch. |
| The processor is programmed to know the rate | | | | There are many features that are not described |
| of sound transmission through the water. With | | | | here, but that is up to you to decide now that |
| this information it can extrapolate the range or | | | | you have a general understanding of how the |
| depth. Now that you have determined the depth, | | | | depth/fish finder works. |
| you can also determine what the fishing technique | | | | |