0 a piece of equipment, especially on a ship, that uses sound waves to discover water depth or the position of an object in the water
The first echo sounder for the commercial fishing fleet came on the market in 1950.
In 1923, the company produced the first practical recording echo sounder.
The programme will cover mechanical systems, hull structures, habitability, in-service support and the updating of her survey capability, including a new multibeam echo sounder.
The echo sounder is included in the new vessel and, therefore, the principle is accepted for the new vessel.
This ship was equipped with all modern navigational aids: magnetic compass; gyrocompass; automatic pilot; radar; echo sounder; speed log, and satellite navigator.
Although the ship's echo sounder was working, the master did not make use of it.
Sonars or echo sounder are typical sources for very high resolution imaging.
Using a portable echo sounder, the team took measurements of the volume of the glacier.
