Page 45: of Marine Technology Magazine (April 2020)

Kongsberg Releases Improved Multibeam Echosounder

Kongsberg Maritime released swath of up to 120 degrees. This two new features on its EM will enable the user to carry out 2040 MKII multibeam echo- bathymetric survey, inspection sounder. The frst enables the and wreck mapping at the high- use of dual high frequencies to est resolution possible today. survey wide swaths of the sea- Seabed classifcation will also

Turner Designs bed at much higher resolutions be more accurate due to the add- than before, while the second ed ability to simultaneously col-

Turner Designs C-FLUOR Probes facilitates simultaneous collec- lect back scatter data at multiple

Offer Digital Output tion of back scatter data using frequencies – an enhancement

C-FLUOR probes are sensitive single-wavelength in situ multiple frequencies. of the single-frequency facility fuorescence and turbidity instruments that are now avail-

The EM 2040 MKII is a broad- standard to all EM systems.

able with a Digital Output option. ASCII data can be polled band multibeam echosounder As part of a new EM technol- every 0.5 seconds or streamed at variable rates as fast as 16 system, which uses frequen- ogy platform designed for future readings per second. Combining a maximum requirement cies from 200kHz to 400kHz challenges, the EM 2040 is of 22mA current draw at 12VDC input with a T99 of less to yield a wide swath of up to compatible with a new Kongs- than 0.6 seconds, Digital C-FLUOR probes require very 170 degrees. With the new high berg-developed datagram format, low levels of power. Factory-calibrated, each C-FLUOR frequency feature, the EM 2040 which supports several new ships with a calibration certifcate that specifes the cali-

MK II will additionally employ features such as extended back brated range and minimum limit of detection as fuoro- 600kHz and 700kHz frequencies scatter calibration, with more phore concentrations. Titanium construction allows for a to give enhanced detail over a features already in development. depth rating of 2,000 meters as well as superior resistance to corrosion, an important factor with the capability for extended deployments. Digital C-FLUOR probes are very small -- 5.2” length x 0.9” diameter (13.24cm x 2.23cm) and weigh 3.3 oz (95 grams). They can easily be integrated with data loggers that accept ASCII data strings via RS- 232. Probes are available for estimating concentrations of: in vivo Chlorophyll, Crude Oil, CDOM/fDOM (dis- solved organic material), Blue/Green Algae, Fluorescein

Dye, Rhodamine Dye, Optical Brighteners, and Turbidity.

Available accessories include Flow-through Cap for in-line sampling; Shade Cap to minimize affects from ambient light and offer protection for the optics; Solid Secondary

Standards for checking instrument stability; various cable lengths; and a programming cable for utilizing software calibration functions if custom calibrations are desired.

Kongsberg Maritime iXblue Launches the Gaps M5

The new Gaps M5 joins the Gaps (now different legs lengths to enhance horizontal

Gaps M7). Gaps M5 integrates an At- tracking capabilities. With the Gaps M5, titude and Heading Reference System no need to tilt the antenna, the acoustic based on iXblue FOG technology for offers maximum aperture and allows up stable heading roll and pitch compensa- to 200° omnidirectional coverage. This is tion and a true north reference. Gaps M5 effcient in shallow water and horizontal is ready-to-use and calibration-free. It tracking conditions. offers an accuracy better than 0.5% up to Gaps M5 is suitable for any tracking 995 m operating range, making it free of operation, from diver- to multiple subsea export restrictions for fast and easy ship- assets- or inspection ROV-tracking while ment. Gaps design has been kept in the M5 Gaps M7 remains the best asset for highest version with slightly shorter legs to reduce survey requirements, subsea multibeam its size. The 3D 4-hydrophone antenna has and laser scan positioning.

iXblue www.marinetechnologynews.com

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