GeoPulse Compact OTS
Sub-Bottom Profiler
Side-mounted Sub-Bottom Profiler for shallow
water operation
Lightweight and rugged design
Durable construction withstands demanding environments while remaining easy to handle and deploy.
Output power up to 1 kW
High acoustic output delivers strong signal returns, supporting reliable sub-bottom interpretation.
Low power: 10–30 VDC (30 W)
Low power consumption enables operation from small vessels and portable power sources.
Operates down to 100 m+
Reliable performance across water depths supports consistent data acquisition in varied environments.
Penetration up to 80 m
Deep penetration reveals buried structures and geological layers, supporting confident subsurface interpretation.
Resolution as small as 6 cm
Fine vertical resolution enables clear identification of thin layers and subtle subsurface features.
Lightweight and robust Sub-Bottom Profiler with low power
consumption
The GeoPulse Compact OTS (Over-The-Side) is an advanced high performance
sub-bottom profiler designed for
rapid deployment and ease of use.
Lightweight and robust with low power
consumption, the system contains a newly designed
transducer and hydrophone which is combined with
state-of-the-art, adjacent transmit and receive
electronics to outperform any other system in the
same size and weight class.
The GeoPulse Compact OTS is designed for use in
shallow water and can work at depths less than 1
metre by receiving on the hydrophone while the
transducer is active.
The system is shipped with the latest version of
Chesapeake SonarWiz© software, for control,
visualisation and data processing.
Efficient power and acoustic performance
Low power requirements combined with strong acoustic output enable reliable sub-bottom profiling from smaller platforms, reducing vessel demands while maintaining consistent data quality across a range of survey conditions.
Established technology with global support
Built on the proven GeoPulse technology platform, the system is supported worldwide through experienced partners, ensuring reliable operation, consistent data standards, and access to technical expertise across a wide range of survey environments.
Compact design for flexible deployment
Lightweight, rugged construction and over-the-side deployment enable rapid mobilisation on vessels of opportunity, supporting efficient operations in nearshore, inland, and confined environments without complex installation or handling requirements.
High-resolution subsurface performance
High-resolution imaging and up to 80 m penetration enable detailed mapping of sediment layers and buried features, supporting confident interpretation for engineering, dredging, and environmental surveys across shallow and coastal environments.
Applied data for diverse sub-bottom surveys
High-quality sub-bottom data supports applications including pipeline detection, dredging assessment, and geological mapping, providing reliable insight to inform planning, risk reduction, and asset management across marine projects.
Interface Box (Model GP01)
Mechanical
Anodised aluminium case
Dimensions
268 mm (D) x 350 mm (W) x 103 mm (H)
excluding connectors
Weight
7 kg
Environment
10 %-95 % RH, non-condensing
0 °C-40 °C (operation)
-20 °C-75 °C (storage)
IP66 rated (including mating connectors)
IP66 rated connector covers supplied
Connectors
Power in, deck cable (up to 50m), 3 x Serial
PPS input, external trigger input
Indicators
Power in, HV, Time sync, Sonar link
Power
Input: 10 VDC-34 VDC
(24 VDC nominal recommended)
Reverse polarity and overvoltage
protected
Power: 30 W typical plus transmitter power
Transmitter power usage: 1 W-35 W
AC Input
Mains Adaptor Supplied.
Input: 90 VAC-305 VAC, 47-63 Hz
Output: 24 VDC nominal, 120 W
capable
Short circuit & over-current protected.
IP65 rated
Serial
3 x RS232 with overvoltage protection
Range of baud rates selectable
PPS
TTL level, protected, edge selectable
Over The Side Bubble (Model GP06)
Mechanical
Anodised aluminium/acetal construction
Fibreglass shell covers.
Dimensions
900 mm (L) x 300 mm (W) x 280 mm (H)
exc. connectors
Weight
24 kg
GP06 Acoustic
Source Level
Up to 196 dB ± 3 dB re 1 μPa @ 1 m
Beam Width
Along track (hydrophone Rx):
(Two way) 35° at 5 kHz
18° at 10 kHz, 12° at 15 kH
Resolution / penetration
6 cm (using 15 kHz “Chirp” sweep)
Up to 80 m (fine clay), up to 20 m (sand)
GP06 Transmit & Receive
TX - Output Power
1 kW peak (adjustable as % of full scale)
TX - Waveform (Pinger)
Frequency and cycles select -
1-32 cycles (in 1 cycle steps).
4-15 kHz (in 0.1 kHz steps
TX - Waveform (Ricker)
Spread spectrum (select by highest
frequency component).
4-15 kHz (in 0.1 kHz steps)
TX - Waveform (Chirp)
Sweeps with 5/10/15 kHz bandwidth
8/16/32 ms length
frequencies 1.5-18 kHz
TX - Rep Rate
Up to 20 PPS (waveform dependent)
RX - Acquisition
Dual channel, 800 kHz front end sampling
50/100 kHz sample output, 24 bit
Acquisition Software
Type
SonarWiz fully featured SBP with control interface
(locked for use with GeoPulse Compact)
Features
Control of all system parameter
Full range of processing tools
Data export industry
, standard formats
1 year of maintenance included
Applications
Our sonars optimise the quality and speed of marine data acquisition while lowering survey costs for commercial, government and scientific users
Contact GeoAcoustics
Ask us a question
Fill out the form, or contact us using the details listed below — our team will get back to you with the information you need
+44 (0)1493 600 666
sales@geoacoustics.com
