Bathyswath-2
Bathyswath-2 has been in use since 2015. It gives excellent performance and reliability in a small, low-power package with 3 frequency options (117, 234 & 468 kHz).
Bathyswath-2 gives wide swath widths; this increases survey speeds significantly, especially in shallow water. It has three frequencies: 117, 234 or 468 kHz with respectively 400, 200 and 100m maximum ranges. The US Geological Survey (USGS) said: “Operating swath of the bathymetric system ranged from 15 to 20 times water depth in in depths less than 15m”.
Unlike Bathyswath-3, Bathyswath-2 works on a single sonar frequency, which can be user selected at run-time, and has one, two, or three separate sonar transducers. It therefore has fewer operational features than Bathyswath-3, but its simpler construction can be useful in some applications.
Different configurations for different uses
- B2S : Bathyswath-2 Standard (Deck Unit)
- B2U : Bathyswath-2 Underwater (Subsea Unit)
- B2O : Bathyswath-2 Omega (full integrated system)
- B2OEM : Bathyswath-2 OEM (for OEM integration)
Bathyswath-2 Standard (B2S)
Bathyswath-2 STD (B2S) system is our standard version, it consists of:
- The Deck Unit (DU) in painted and anodized aluminum. It is IP66 and includes the sounder electronics for 1, 2 or 3 transducers
- One, two or three transducers (117, 234 or 468 kHz choice)
- One, two or three cable extensions for the transducers (5, 10, 15 or 20m standard, more on request)
- A V-bracket (small V-bracket by default, it is only compatible with 234 and 468 kHz transducers; the big V-bracket is a necessary option for 117 kHz transducers or if you want to install, underwater between the transducers, a motion sensor and/or a sound velocity sensor)
To complete the bathymetric “package”, you will also need the following ancillary devices:
- A GNSS receiver
– Double antenna for the heading value and PPS for the GPS time
– RTK (Rover) or satellite correction services (Omnistar, Atlas, etc.) or GSM for centimetric position - A sound velocity profiler and ideally, a sound velocity sensor near the transducers
- A motion sensor for heave, pitch and roll
Frequencies : 117 kHz / 234 kHz / 468 kHz
- Operational slant range (m): 400 / 200 / 100
- Maximum slant range (m): 600 / 300 / 150
- Minimum depth (m): 0.3 / 0.2 / 0.1
- Measurement resolution limit (mm): 12 / 6 / 3
- Resolution detection limit (mm): 6 / 3 / 1.5
- Across track resolution (cm): 5 / 2 / 1
- Azimuth beam width (2way): 0.85° / 0.55° / 0.55°
- Transmit pulse length (μs): 17 to 8500 / 8.5 to 4300 / 4.3 to 2100
- Max. cable length (m): 50
- Transducer dimensions (mm): 200 x 550 x 70 / 100 x 340 x 55 / 60 x 230 x 40
- Transducer weight, air-water (kg): 8.6 kg – 1.3 kg / 5 kg – 0.8 kg / 1 kg – 0.1 kg
- Deck Unit (DU) dimensions: 256 x 155 x 145 mm, 4.2 kg
Bathyswath-2 Underwater (B2U)
Bathyswath-2 Underwater (B2U) system is our underwater and integrated version, it consists of :
The Subsea Unit (SU) in titanium. It is waterproof to 300m (or 3000m in options) and includes:
- Sonar electronics for 1 or 2 transducers
- A communication and power board
- An optional INS or MRU (Ekinox A or E)
- An optional Sound Velocity Sensor (miniSVS)
- One or two transducers (234 or 468 kHz)
- An umbilical (20m by default, longer or shorter on demand)
To complete the bathymetric “package”, you will also need the following ancillary devices:
- A GNSS receiver
– Double antenna for the heading value and PPS for the GPS time
– RTK (Rover) or satellite correction services (Omnistar, Atlas, etc.) or GSM for centimetric position - A sound velocity profiler for the speed of sound in the water column
Frequencies : 234 kHz / 468 kHz
- Operational slant range (m): 200 / 100
- Maximum slant range (m): 300 / 150
- Minimum depth (m): 0.2 / 0.1
- Measurement resolution limit (mm): 6 / 3
- Resolution detection limit (mm): 3 / 1.5
- Across track resolution (cm): 2 / 1
- Azimuth beam width (2way): 0.55° / 0.55°
- Transmit pulse length (μs): 8.5 to 4300 / 4.3 to 2100
- Max. cable length (m): 50
- Transducer dimensions (mm): 100 x 340 x 55 / 60 x 230 x 40
- Transducer weight, air-water (kg): 5 kg – 0.8 kg / 1 kg – 0.1 kg
- Subsea dimensions with 234 kHz transducers: 192 x 290 x 660 mm, 26.6 kg
- Subsea dimensions without transducers: 192 x 210 x 510 mm, 21.8 kg
Download documents
Bathyswath-2 OMEGA (B2O)
Bathywath-2 OMEGA (B2O) provides sonar control, GNSS positioning, INS motion compensation, sound velocity measurement, and data acquisition and sonar processing and data acquisition in one compact package. Bathyswath uses wide swath widths; this increases survey speeds significantly, especially in shallow water.
- 3 sonar frequencies (117, 234 or 468 kHz), in bathymetry and sidescan.
- Low-power consumption.
Integrated OMEGA deck unit
One optional motion sensor (4 possibilities), one optional dual-antenna GNSS receiver for heading and positioning (3 possibilities) and two single-board-computers (one for sonar data acquisition and one for 4G communications & end-user needs).
3 different transducers: 117, 234 or 468 kHz.
Frequencies : 117 kHz / 234 kHz / 468 kHz
- Operational slant range (m): 400 / 200 / 100
- Maximum slant range (m): 600 / 300 / 150
- Horizontal beam width (2way): 0.85° / 0.55° / 0.55°
- Spatial resolution limit(mm): 6 / 3 / 1.5
- Deck unit dimensions (mm): 390 x 290 x 100
- Deck unit weight (kg): 4.1
- Deck unit sealing: 100
- Transducer dimensions (mm): 200 x 550 x 70 / 100 x 340 x 55 / 60 x 230 x 40
- Transducer weight, air-water (kg): 8.6 kg – 1.3 kg / 5 kg – 0.8 kg / 1 kg – 0.1 kg
Download documents
Bathyswath-2 OEM (B2OEM)
Bathyswath-2 OEM (B2OEM) is made for integration by clients in their own systems, which includes the following items:
- 1 to 3 transducers (117, 234 or 468 kHz)
- 1 x Transducer Electronic Module (TEM) – Bare board set
- 1 x Data acquisition & 3D processing software (Unlimited licences, no PC is supplied)
- 1 x Data acquisition software for Linux or Windows (other operating systems available on request)
- 12 month return-to-base warranty and packaging.
Optional components include:
- An interface board, simplifying connection to the electronics
- Cable sets, with standard computer and power connectors
- Transducer extension cables
- Transducer mounting hardware
Frequencies : 117 kHz / 234 kHz / 468 kHz
- Operational slant range (m): 400 / 200 / 100
- Maximum slant range (m): 600 / 300 / 150
- Minimum depth (m): 0.3 / 0.2 / 0.1
- Measurement resolution limit (mm): 12 / 6 / 3
- Resolution detection limit (mm): 6 / 3 / 1.5
- Across track resolution (cm): 5 / 2 / 1
- Azimuth beam width (2way): 0.85° / 0.55° / 0.55°
- Transmit pulse length (μs): 17 to 8500 / 8.5 to 4300 / 4.3 to 2100
- Max. cable length (m): 50
- Transducer dimensions (mm): 200 x 550 x 70 / 100 x 340 x 55 / 60 x 230 x 40
- Transducer weight, air-water (kg): 8.6 kg – 1.3 kg / 5 kg – 0.8 kg / 1 kg – 0.1 kg