narrow beam echo sounder
A device used underwater to produce pulses of sound, as for an echo sounder.
The navigation equipment includes a gyrocompass, a bearing repeater for the helmsman, a magnetic compass, a radar, a log, an echo sounder, aP Mark3 navigator plus wind direction and panels once again in the wheel house and repeated for the helmsman.
horizontal projection echo sounder
Signal features and dynamic range compression of swath echo sounder
It is important to eliminate or degrade the effect caused by the beam width of echo sounders and reflect the true seabed.
hydrographic precission scanning echo sounder
It also carries out surveys through two specially-designed vessels which are fitted with the latest type of equipment including multi-beam echo sounders.
In bathymetric survey, the recorded seabed is distorted due to the beam-width of the echo sounder.
magneto striction echo sounder
Inspection installation and water tightness transducer of echo sounder on berth.
