Mapping & Acoustic Systems
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- High dynamic range
- Raw data recording
- Low self-noise
- High ping rate
- Multi frequency application for species identification
- Simultaneous transmission of all frequencies
- Several frequencies covering same sampling volume
- Wide band frequency sweep ("chirp") in combination with advanced signal processing gives an exceptionally good signal to noise ratio and range resolution
- Remote control
- Network interface for raw data recording
- Acoustic Doppler Current Profiler (ADCP) functionality with EC15-3C
- Bathymetric systems (3.5 kHz and 12.0 kHz)
- Knudsen 320B/R with digital data logging and EPC graphic recorder
- Knudsen 3260 Chirp echsounder
- Edo 323 B 12 kHz transducer
- Array of 12 3.5 kHz transducers
RANGER 2 USBL - UNDERWATER TRACKING, DYNAMIC POSITIONING, TELEMETRY PERFORMANCE
- Up to 0.04% of slant range system accuracy
- Up to 99 targets tracked, simultaneously
- Up to 11,000 m tracking range (LMF)
- 1 Hz position update rate
- Support all industry standard DP telegrams
- Supports acoustically-aided INS
- ACOUSTICS
- MF frequency (19-34 kHz) or LMF (14-19.5 kHz)
- Sonardyne Wideband 2 digital acoustics for reliable performance in both shallow and deep environments
- Supports Sonardyne Messaging Service for data exchange up to 9,000 bps
- Compatible with a wide range of 6G transponders
The modular, state-of-the-art EM 124 performs accurate, high resolution seabed mapping in shallow to full ocean depth. The successor to the EM 122, the EM 124's broad range of functionality supports simultaneous collection of multiple data types, saving time in the planning, execution and analysis phase. A low noise echo sounder, EM 124 delivers superior data that requires minimal post-processing. All beams are maintained and automatically adjusted according to achievable coverage or operator defined limits. Up to 1600 individual beams are available in dual swath mode. Two individual transmitting fans are generated with a small difference in tilt giving a constant sounding separation along track, resulting in a dense sounding pattern on the seafloor.
- Depth range: 20 to 11000 metres, or full ocean depth. The depth range depends on water temperature, noise level and bottom type.
- Nominal frequency: 12 kHz
- Operating frequency: 10.5 - 13.5 kHz
- Swath width: Typically 6 times the depth or more than 40 km
- Number of swath: 2 swaths per ping
- Pulse length: 1 ms CW to 100 ms FM effective pulse length
- Number of transmit sectors: 16 frequency coded transmit sectors per ping / 8 per swath
- Available transmitter models: 0.5 degree, 1 degree, 2 degrees and 4 degrees
- Available receiver models: 1 degree, 2 degrees and 4 degrees
- Number of receiver beams (per ping): 1600 beams, 1 degree RX 1024 beams, 2 degree RX 512 beams, 4 degree RX
- Multi-bounce suppression: Better than 50 dB
- Beam focusing: On transmit and receive
- Deliverables: Bathymetric data, Seabed imagery data, Water column data, Extra depth detections
- Realtime motion stabilization: Roll: ± 15 degrees, Pitch: ± 10 degrees, Yaw: ± 10 degrees
- Sounding pattern: Equidistant and equiangular
The MK-21/ISA Bathythermograph Data Acquisition System is a portable data acquisition system that measures and outputs ocean temperature, conductivity and sound velocity versus depth using expendable probes that are launched from surface ships. The MK21 interface board, when installed in an available ISA slot of the PC, inputs and processes the data from Sippican XBT, XSV and XCTD probes launched from Sippican LM-2A, LM-3A and LM-4A launchers. And with the WinMK21 Data Acquisition and Post-Processing Software installed on the computer, profiles of temperature verses depth, sound velocity verses depth, and temperature and conductivity verses depth can be displayed, stored on disk, output on a serial port of the computer, and printed.
Acoustic pingers make it quick and easy to relocate an underwater site or piece of equipment. The pinger is attached to an underwater location where it continuously transmits a sonar signal. A diver equipped with a pinger receiver can detect the acoustic signal and follow it directly to the pinger. Pingers are available with different transmit frequencies so several can be deployed in the same general area without interfering with each other.
When a CTD system is requested through the Cruise Planning Questionnaire, the ship will be provided with the following configuration:
- SBE9+ CTD
- Complete system depth limit is 6000m
- Dual SBE3T/SBE4C sensor system
- One spare of each: SBE3T temp, SBE4C conductivity, SBE5 pump
- SBE43 oxygen sensor on primary channel
- Benthos/Datasonics PSA-916 altimeter for bottom approach
- Wet Labs FLNTURTD combination fluorometer and tubidity sensor
- Wetlabs C-Star transmissometer, 660nm wavelength, 25cm pathlength
- Rosette frame with SBE32 24-position carousel
- 24 ea. 10-liter OIS or WHOI Niskin bottles
- SBE11+ CTD deckunit with NMEA position interface
Note: Atlantis typically operates with 23 Niskin bottles, but this configuration can easily be changed to 24 bottles.
Optional or alternate items which must be requested during the cruise planning process include:
- Biospherical Instruments QSP-200L4S underwater PAR sensor, 1000m depth limit with accompanying surface PAR (QSR-240)
- Wet Labs ECO-AFL fluorometer
- Seapoint STM turbidity sensor