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

– Bathyswath-2 Underwater (Subsea Unit)

– Bathyswath-2 Standard (Deck Unit)

– Bathyswath-2 OEM (for OEM integration)

Bathyswath-2 Standard

Bathyswath-2 STD 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
  • Very small to medium sized survey boats
  • Unmanned surface vehicles (USVs)

Bathyswath-2 Underwater

Bathyswath-2 UW 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
  • Small to large survey boats
  • Tethered underwater platforms, e.g. ROVs

Bathyswath-2 OEM

Bathyswath-2 OEM 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
  • User-developed platforms
  • Unmanned surface vehicles (USVs)
  • Autonomous underwater vehicles (AUVs)

Bathyswath-2 OMEGA

Bathywath-2 OMEGA 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
  • Marine services
  • Research
  • Environment
  • Natural Resources
  • Archaeology
  • Military Rapid Environmental Assessments (REA)
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