Services

 Hydrographic Survey is the science of mapping of underwater topography, which ensure safety of navigation and support various maritime and marine construction activities. The main methods include Single Beam Echo Sounder(SBES) Survey and Multi Beam Echo Sounder (MBES) Survey.

SBES Survey determines the depth of water by measuring two-way travel time of one acoustic pulse. The pulse is emitted from one transducer underwater and the return echo is received by the transducer. Teledyne EchoTrac E20 Singlebeam Echosounder System is a dual channel survey echosounder. It is easy to use and can provide precise and reliable data.

The Multi Beam Echo Sounder can determine the water depth efficiently and with high accuracy. It transmits a fan shape wave with the transmitter underwater. And in its receiver, beamforming technology is used to determine the direction of the return wave. As a result, one ping can generate a swath of depth readings. R2 Sonic 2024 Multibeam Echosounder System utilizes 256 discretely formed beams over a user selectable sector from 10° to 160°. Operating frequency can be chosen from 200 to 400 kHz. It focuses an across-track and along-track beamwidth of 0.5° and 1° respectively at 400kHz.