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Start / News and media / In focus / Unmanned ”Nemo” impressed host…

Unmanned ”Nemo” impressed hosts at international exercise

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The reliability and flexibility of the Swedish ASW training target platform "Nemo" impressed the hosts at the Royal Navy during an international exercise for unmanned systems.

The Royal navy arranged the exercise "Unmanned Warrior" where more than 50 autonomous systems participated in a number of different scenarios such as surveillance, intelligence operations and countermeasures. 

Matteo Perrone is Development Engineer at FMV – Swedish Defence Materiel Administration with underwater vehicles as profession.  Matteo Perrone, specialist on underwater systems at FMV – Swedish Defence Materiel Administration, participated during a large part of the exercise.

– I would say that this was a study of autonomous systems and how they can change the way naval forces will act in the future.

The exercise was held outside the western parts of Scotland and Wales and gathered 40 industrial partners and international allies bringing the latest within unmanned surface and underwater technology.

Sweden was represented by the Saab Dynamics AUV62AT, or Nemo as this particular unit is named. It has been developed to, among other possible missions, simulate a submarine during ASW exercises.

– Nemo had the leading part as an acoustic target for all other systems, manned as well as unmanned. For example one mission for Nemo was to simulate a submarine leaving a controlled harbor and outside that safe area become a target to detect and track. In another mission Nemo simulated a hostile submarine trying to enter a harbor guarded by unmanned surveillance systems, Matteo Perrone explains.

Due to the fact that another AUV planned for these missions experienced technical difficulties Nemo had twice the amount of mission time than originally planned, which was no problem for the vehicle or its mission planning system. 

AUV62AT, or Nemo as this particular unit is named, has been developed to, among other possible missions, simulate a submarine during ASW exercises.– What impressed other countries the most was the navigational precision of the AUV62AT system which enabled it to navigate out of the harbor, fulfill the mission and navigate back into the harbor again with minimal positional deviation although it was submerged the entire time.

Nemo was often winched on the torpedo ramp on the support vessel for extraction of mission data and battery charging without having to get back to shore. The exercise was a perfect opportunity to test the ability of the AUV62AT system to operate in blue water, rough seas and strong currents, up to 3 knots.

– The Swedish contribution to the exercise was very appreciated. The reliability and flexibility of ASW training target platform impressed both operators and hosts at the Royal Navy, says Matteo Perrone.

The navigational precision of the AUV62AT system which enabled it to navigate out of the harbor, fulfill the mission and navigate back into the harbor again with minimal positional deviation although it was submerged the entire time impressed other countries. Nemo is owned by FMV during the ongoing final tests and is scheduled to be delivered to the Swedish Armed Forces (SwAF) later this spring. Before that the acoustic response levels following a registered sonar pulse will be further enhanced to make them more realistic.

FMV has developed the ASW training service using this AUV62AT named Nemo. The system will be operated by Saab Dynamics during SwAF ASW exercises.


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Published: 2017-02-28 16:40. Changed: 2017-02-28 17:17. Responsible: Show e-mail address.