Page 45: of Marine Technology Magazine (May 2023)

Subnero, Popoto Unveil New Underwater Acoustic Modem

Subnero and Popoto Modem have joined forces to create a new underwater acoustic modem, the S1000-N. The modem combines the best from both companies, bringing together the power of the Popoto’s S1000 series modems and Subnero’s underwater network stack (UnetStack), enabling advanced underwater networks for a variety of underwater applications, such as current and temperature measurement, pollution tracking and other multi-node uses. With the S1000-N, users can see a data rate of up to 10240 bps over a range of 3+ km. Subnero’s technology integration allows users to take full advantage of UnetStack, an underwater networking stack with features such as multi-hop routing, fragmentation and reassembly, contention- free communication, and much more, providing users with a more reliable and ef- ? cient way to send data underwater. With a fully functioning network stack out of the box, the S1000-N offers users a powerful and affordable solution for underwater communications, according to Subnero and Popoto. One of the key features of the

S1000-N is its ability to operate at a low power draw, while still offering the bene? ts of a software de? ned modem. The S1000-N supports multiple computer languages for interfacing (e.g. Java, Python, Groovy, Julia, C, JavaScript), and allows for cus-

Exail tomization at various levels. These features provide users with the ability to build

Exail Launches New Compact and customize their applications. The S1000-N provides the ability to transmit and

USBL Positioning System record unique waveforms, allowing the unit to act as an acoustic data logger or

Exail launched Gaps M3, a new general acoustic source.

compact subsea ultra-short baseline

The S1000-N is suited The S1000-N is available at a starting price of $6,750.

(USBL) acoustic positioning system for permanent vessel installation.

Gaps M3 is a USBL positioning sys- tem with no embedded Inertial Navi-

Subnero gation System (INS), making it a cost- effective choice for operators who can rely on existing onboard navigation sys-

Exail Launches All-in-One INS and DVL System tems. Intended for permanent USBL in-

Exail launched the Rovins 9 DVL, a new all-in-one system for subsea vehicles stallations, Gaps M3 can indeed be cou- that combines the best of inertial navigation and Doppler Velocity Log (DVL) tech- pled with navigation systems already on nologies in one tightly integrated system. Described as highly compact for easy ve- board to provide users with continuous hicle integration, the Rovins 9 DVL all-in-one design combines, in a single housing,

Exail advanced Fiber-Optic based INS with a Nortek DVL. This tight integration access to high-level precision meeting any operational requirement for survey of raw sensor data from both INS and DVL provides operators with highly accurate and Dynamic Positioning (DP) opera- position, velocity, and attitude information, even in challenging subsea environ- tions. Deployments from opportunity ments, Exail said. This new all-in-one system is suited for subsea companies look- vessels are still possible thanks to Gaps ing to maximize ef? ciency, and

M3 integrated MEMS Attitude and allows for higher levels of reli- ability, with a position accuracy Heading Reference System (AHRS).

Bene? tting from the existing Gaps Se- of up to 0.02%TD and a heading ries renowned features, the Gaps M3 is accuracy of up to 0.01°RMS, ac- equipped with a 3D, 4-hydrophone acous- cording to the manufacturer.

tic antenna which provides maximum

Maxime Le Roy, INS Prod- uct Manager at Exail, said “the 200° aperture, along with new telem- etry features, enabling advanced acoustic

Rovins 9 DVL greatly simpli- communication capabilities. It offers true ? es the work of subsea operators in the ? eld. The system can be horizontal tracking and communication easily integrated into a variety capabilities in shallow and deep water, of subsea vehicles, including especially when multiple vehicles need to be located simultaneously at 360°.

ROVs, AUVs and tow ? shes,

The Gaps M3 is available in an export- thanks to its unique compact free version with a 995m maximum oper- horizontal design and plug-and- ating range and in an extended range ver- play feature.”

Exail sion for operations to depths over 4000m.

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