CORAL System

Mobile seismic system for marine surveys and monitoring on the shelf and in transition zones.

The system based on 4C Ocean Bottom Nodes which are controlled by the system’s lab containers.

Designed for offshore seismic exploration and regional studies.

CORAL Composition

Ocean Bottom Nodes


Operation in any orientation at the seabed

Autonomous operation during 50 days

Connection of external hydroacoustic modem, for positioning and data transfer

Advanced self-diagnostic system

Battery recharging time is 20 hours

Physical characteristics:

Dimensions 400 x 260 x 125 (145) mm

Weight in air 20 kg

Technical Specifications:

4 channels
Orthogonal oriented Geophones: BH-20MT OMNI / GS-ONE OMNI
24 bit, delta-sigma with sample interval 0.25, 0.5, 1, 2, 4 ms
0, 6, 12, 18, 24, 30, 36 dB
Max input signal
2500 mV
Equivalent input noise (2ms, 0dB)
0.87 mV (rms)
Dynamic Range
124 dB
>90 dB
>110 dB
< -100 dB
New OCXO tuning system
tweaks 3x faster

Lab container


Charging batteries of the Ocean Bottom Nodes

Controlling the Ocean Bottom Nodes

Downloading recorded data from the Ocean Bottom Nodes


Up to 288 Ocean Bottom Nodes

Can be powered by different supply source (220V, 380V, 440V)

CORAL System Features

Can be operated onshore
or at depth up to 1000 meters

Repreparation time
is 20 hours max.

Operating temperature
from -10° to +50° C


Marine Technical Center Limited Liability Company

+7 812 339-94-84​​

Dvinskaja st., 14A, space 1-n, office 70,
St. Petersburg, Russia, 198035

We will contact you within 1 working day!