Japanese Fish Finders
The development of fish finders in Japan started when a sixteen year old student developed one. He tested his prototype on boats and was often thrown overboard because the captain didn’t like it. Nevertheless, he continued to improve his equipment, and eventually it became a success. Kiyotaka was soon called “god of sardines” for his ability to locate schools of fish. dragonfly fish finders
Today’s fish finders have several advanced features. These include the ability to connect to other devices through a wireless link, including an electronic scale, a depth alarm, and a camera. They can even send photos of caught fish to friends and family around the world, and are also highly customizable. The Japanese have long been fascinated with fishing technology and hand-held devices, and the latest models of Japanese fish finders are no exception.
A fish finder’s screen shows the location of fish schools and individual fish. A fish school appears as a lump on the seabed. The seabed is usually rocky, so the school will appear as a line or cluster of clumps. The fish finder will also display the position of a fishing line below the boat.
A fish finder can also display underwater plankton and schools of fish. The images on the screen aren’t real images of the fish but the result of the returned acoustic waves. These echoes cause a minuscule distortion in the crystal in the transducer. This distortion creates a small fluctuation in the voltage that the fish finder can detect. The image is displayed on the screen in color.
The development of fish finders in Japan began when the Furuno Electric Company in Nagasaki, Japan, established a subsidiary company, Furuno Electric Industries. The company was founded in 1938 and the development of fish finders began soon after. Later, the company developed radars and net monitors. Today, the company has about 3,000 employees and is composed of more than a hundred privately-owned companies. Its net sales last year surpassed seven hundred million yen.
Ultrasound waves are also used in fish finders. These waves are transmitted from the bottom of the boat to the seabed and are reflected by objects below. This reflected ultrasound enables fish finders to calculate the depth of a fish school. In addition, the fish finder can detect fish school by detecting the echo returned by a fish.