GeoChart X240 Subsea Multibeam Echosounder

200–400 kHz multibeam · rated 6,000 m

Tunable from 200 to 400 kHz — Trade range against resolution on the fly instead of fitting a second sonar.
No cabling between bottle and arrays — Electronics sit with the arrays, purpose-built for AUV / ROV integration.
Rated to 6,000 m — 4,500 m and 11,000 m versions available.
0.5° × 0.5° beams at 400 kHz — Resolves small targets and obstacles close to the seabed.
150° swath — Coverage of at least 5× altitude in a single pass.
Electronic beam stabilization — Compensates vehicle roll and pitch in real time.
Gigabit Ethernet, AUV mode — All-digital output for plug-and-play autonomous operation.

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Overview Technical Specifications Case Study Download

GeoChart X240 is a subsea broadband multibeam echosounder built for deep-sea survey and tight integration on underwater vehicles. Electronics and transducer arrays share compact pressure housings, removing the high-frequency watertight cabling that links a separate electronics bottle to the arrays in conventional split systems. Fewer cables means fewer failure points at depth, and a payload that suits AUVs and ROVs where internal volume, weight and hydrodynamics are at a premium.

Broadband piezo-composite arrays tune continuously from 200 to 400 kHz, so the operator chooses per task: 400 kHz for 0.5° imaging of near-bottom structures, or 200 kHz for a wider swath in deep water and to step away from same-frequency interference. With up to 1,024 dynamically formed beams and real-time beam stabilization, GeoChart delivers 3D bathymetry, seabed imagery and water-column data to IHO S-44 Special Order.

3D terrain model from multibeam bathymetry

Target detection on multibeam bathymetry (annotated example)

GeoChart system wiring diagram

Applications

Deep-sea topographic and geological survey; polar under-ice mapping

Inspection of offshore wind farms, subsea pipelines and waterway structures

Wreck search, underwater archaeology and fine-scale obstacle survey

AUV / ROV navigation and obstacle avoidance

Complex seabed reconnaissance and underwater target surveillance

Technical Specifications
Number of Beams	Up to 1,024
Operating Frequency	200 – 400 kHz
Pulse Length	50 μs – 10 ms
Ping Rate	10 Hz @ 70 m
Operating Range	400 m
Transmit Sector	150°
Swath Width	≥5× altitude (at 40 m altitude)
Across-track Resolution	0.5°
Along-track Resolution	0.5°
Beam Stabilization	Pitch and roll
Depth Accuracy	Meets IHO S-44 Special Order
Triggering	Internal / external
Data Output	Standard XTF; AUV mode supported
Temperature	−3 to +40 °C operating (in water); −10 to +55 °C storage
Physical Specifications	GeoChart 4240	GeoChart 6240
Max. Working Depth*	4,500 m	6,000 m
Power Supply	48 VDC
Power Consumption	65 W average; 160 W peak (transmit)
Communication	Gigabit Ethernet (sonar and sensor data)
External Interface	External trigger input
Transmit Array (L × W × H)	450 × 120 × 155 mm	450 × 120 × 170 mm
Transmit Array Weight (air / water)	23 kg / 16 kg	26 kg / 18 kg
Receive Array (L × W × H)	480 × 115 × 90 mm	500 × 120 × 105 mm
Receive Array Weight (air / water)	20 kg / 13 kg	22 kg / 15 kg

Dimensions exclude connectors. Width including cover plate: transmit array 146 mm; receive array 141 mm (4240) / 146 mm (6240).
* An 11,000 m full-ocean-depth version (GeoChart 11240) is available on request.

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GeoChart X240 Subsea Multibeam Echosounder Datasheet

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GeoChart X240 Subsea Multibeam Echosounder

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GeoChart X240 Subsea Multibeam Echosounder Datasheet