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Marine Robots Survey D-Day Rehearsal Wreckage for the First Time in History

Mission commemorates 70th anniversary of World War II Tragedy


News provided by

Hydroid, Inc.

Apr 22, 2014, 06:00 ET

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POCASSET, Mass., April 22, 2014 /PRNewswire/ -- A mission off the coast of South Devon, England has surveyed two U.S. Landing Ship Tanks (LSTs) that were torpedoed and sunk during the D-Day rehearsal Exercise Tiger on April 28, 1944. Using state-of-the-art autonomous underwater vehicle (AUV) technology to collect data from the wreckage site, the mission has produced the first high-definition sonar images of this World War II tragedy. This was the first time in history that an AUV had surveyed the area.

Geoswath scan of LST 531 taken from the REMUS 100 (PRNewsFoto/Hydroid, Inc.)
Side scan sonar image of LST 531 taken from the REMUS 100 (PRNewsFoto/Hydroid, Inc.)
Side scan sonar image of LST 507 taken from the REMUS 100 (PRNewsFoto/Hydroid, Inc.)
REMUS 100 AUV on deck before launching (PRNewsFoto/Hydroid, Inc.)
Royal Navy MASTT officers review side scan data (PRNewsFoto/Hydroid, Inc.)
Geoswath scan of LST 531 taken from the REMUS 100 (PRNewsFoto/Hydroid, Inc.) Side scan sonar image of LST 531 taken from the REMUS 100 (PRNewsFoto/Hydroid, Inc.) Side scan sonar image of LST 507 taken from the REMUS 100 (PRNewsFoto/Hydroid, Inc.) REMUS 100 AUV on deck before launching (PRNewsFoto/Hydroid, Inc.) Royal Navy MASTT officers review side scan data (PRNewsFoto/Hydroid, Inc.)

The mission, which was executed by Hydroid, Inc., a subsidiary of Kongsberg Maritime and the leading manufacturer of AUVs, with additional data provided by the Royal Navy's Maritime Autonomous System Trials Team (MASTT), commemorates the 70th anniversary of Exercise Tiger. A tragic but largely unknown military operation, Exercise Tiger was a D-Day rehearsal for the invasion of Normandy's Utah Beach. The exercise took place off the southern English coast and resulted in the loss of nearly 1,000 American servicemen - more than the number of deaths at the actual invasion of Utah Beach.

The REMUS 100, a Hydroid AUV used for the mission, is designed to perform intricate oceanographic surveys over large areas. The vehicle is equipped with multiple sonar instruments that enable it to capture high-resolution imagery of objects on the sea floor. Using these instruments, Hydroid was able to secure close proximity, high-quality side scan and wide swath interferometric bathymetric multi-beam sonar images of the two LST wreck sites. The data show that both LSTs are about 50 meters below the surface and reach between six to eight meters above the seafloor. The REMUS 100 also discovered an object of interest close to the shore which may hold significance in relation to Exercise Tiger. An effort to identify this object is currently underway by the Royal Navy.

While Hydroid operated in the English Channel about 30 miles out to sea, MASTT focused on the waters just off Slapton Sands where the Exercise Tiger beach landing took place. The information collected by MASTT's REMUS 100 was an important supplement to the efforts of the Hydroid team. To commemorate the 70th anniversary of Exercise Tiger, Hydroid and the Royal Navy will be donating images obtained from this mission to the UK National Archive and local memorials.

"We hope that the data collected on this mission will shed additional light on this tragic event and help bring some closure to the families who lost their loved ones during Exercise Tiger," said Richard 'Bungy' Williams, Regional Manager, Hydroid Europe. "We are proud to use our technology to honor the memories of the servicemen who lost their lives in this tragic operation."

--Additional video footage, sonar images and interviews are available upon request--

To download the high resolution video associated with this release, click here: https://docs.google.com/a/greenoughcom.com/file/d/0B265G2VUQKDHMTR4YTktemhvWGc/edit

More Information about Exercise Tiger

Exercise Tiger was one of several rehearsal trainings for the D-Day invasion of Normandy's Utah Beach. The exercise took place along the beach at Slapton Sands on the South coast of England, an area chosen due to its similar layout to Utah Beach. On the morning of April 28, 1944, a convoy of eight Landing Ship Tanks (LSTs) was traveling in Lyme Bay heading toward Slapton Sands when they came under attack by nine German torpedo boats. The Germans had been dispatched to investigate heavy radio traffic in the area. LSTs 507 and 531 were hit and sunk. LST 289 was also hit but made it back to shore. In all, 749 soldiers died that night, and 946 in total during Exercise Tiger. It was the most deadly training involving U.S. servicemen during World War II, and more deadly than the actual invasion at Utah Beach weeks later.

About Hydroid, Inc.

Located in the U.S. and a subsidiary of Kongsberg Maritime, Hydroid is the world's most trusted manufacturer of autonomous underwater vehicles. Its flagship line of REMUS AUVs, together with Kongsberg Maritime's HUGIN, MUNIN and Seaglider underwater vehicles, provide marine professionals worldwide with intelligent marine robots they can rely on. These innovative full-picture AUV systems are utilized internationally in marine research, defense, hydrography and energy exploration. This family of AUVs represents the most advanced, diversified and field-proven line of AUVs and support systems in the world.

For more information on Hydroid and Kongsberg marine robotics technology, please visit www.km.kongsberg.com or www.hydroid.com.

Media Contact
Rachel Vaccari
Greenough
617-275-6521
[email protected]

Video - http://origin-qps.onstreammedia.com/origin/multivu_archive/PRNA/ENR/FX-MM09543-20140422-1.mp4
Photo - http://photos.prnewswire.com/prnh/20140421/76956
Photo - http://photos.prnewswire.com/prnh/20140421/76958
Photo - http://photos.prnewswire.com/prnh/20140421/76959
Photo - http://photos.prnewswire.com/prnh/20140421/76960
Photo - http://photos.prnewswire.com/prnh/20140421/76957

SOURCE Hydroid, Inc.

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