The Compact Ocean Observatory



Max. depth: Standard (250 m), Deep (2500 m), or custom
Operating temperature: −5 to 50 °C
Shock tested: 3 m drop into water
                       1 m drop onto concrete
Vibration tested: Transport by air, truck, or vessel

Physical (Standard model)

Dimensions: Ø 16.5 cm D × 57.2 cm L
Material: PVC, anodized aluminum, 316 stainless steel, Type 2 titanium
Weight in air: 10 kg
Weight in seawater: 1 kg
Custom housings are available upon request.


Sensitivities and frequencies tailored to your needs.
Nominal sensitivity: −164 dBV re 1 μPa @ 1 kHz
Frequency response: 1 Hz to 150 kHz


Typical power use: 600 mW
Power input: 7–16 Vdc

Software options

The open-format data stream from the Observer can be received, processed, and logged by your own software,
custom-developed applications, or JASCO’s existing suite of monitoring solutions:

SpectroPlotter: displays data stream for viewing, analysis, and archiving
Stream Converter: converts data stream to WAV and CSV files
Stream Server: converts data stream to WAV and CSV files across multiple host computers

Custom software applications are available upon request.

Eight 24-bit acoustic channels

Two banks of 4 channels: Each bank has independently-selectable sample rates
Sample rates: 2–128 ksps
Spectral noise floor: Better than −150 dB re FS at 128 ksps
Gain settings: 0–42 dB
Data format: WAV
Max. combined throughput: 1476 MB/s

High speed, 16-bit acoustic channel

Sample rates: 125–687.5 ksps
Dynamic range: 14.5 effective bits
Voltage: 0–4.5 V peak-to-peak
Data format: WAV
Max. combined throughput: 1476 MB/s

Oceanographic sensor channels

Sensors available: Dissolved oxygen, salinity, acidity/pH, temperature, depth,
                              turbidity, orientation (roll-pitch-yaw), others upon request

Eight analog channels:
        Sample rate: 1 Hz
        Dynamic range: 10.5 bits
        Voltage: −10 to +10 V
Digital inputs: RS-232, RS-485, USB, Ethernet
Non-acoustic data format: CSV

Data output

The open-format data stream sends acoustic and oceanographic
data over Ethernet via: Copper, fiber optic, Wi-Fi, VHF, UHF, Iridium, RUDICS

Due to continued product development, these specifications are subject to change without notice.
Contact us for pricing and customization options.