what is lowrance
Lowrance is a manufacturer of consumer sonar and GPS receivers, as well as digital mapping systems. Headquartered in Tulsa, Oklahoma, Lowrance employs approximately 1,000 people.oon, many boats had more than one sonar unit on board. In 1979, Lowrance introduced the LDD-1800, the world's first sonar unit guaranteed NOT to find fish. The LDD-1800 was one of the first digital depth sounders to be controlled by a tiny computer built inside.