Marine Robots Survey D-Day Rehearsal Wreckage

Joseph Keefe
Tuesday, April 22, 2014

Mission commemorates 70th anniversary of World War II Tragedy.

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.

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. Steps to identify this object are currently being taken.

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."

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.
 

Maritime Reporter July 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Maritime Security

South China Sea Hotline in the Works

China and Southeast Asian nations have agreed to set up a foreign ministers' hotline to tackle emergencies in the disputed South China Sea, a senior official of

Three Rescued on Lake Tahoe

The Coast Guard and multiple agencies rescued three people Wednesday evening after they were reported missing on Lake Tahoe. At 9:45 p.m., Coast Guard Sector

Fond Farewell to HMAS Tobruk

The Governor-General, His Excellency General the Honourable Sir Peter Cosgrove, AK, MC (Retd), together with the Assistant Minister for Defence Stuart Robert, MP,

Maritime Safety

South China Sea Hotline in the Works

China and Southeast Asian nations have agreed to set up a foreign ministers' hotline to tackle emergencies in the disputed South China Sea, a senior official of

Three Rescued on Lake Tahoe

The Coast Guard and multiple agencies rescued three people Wednesday evening after they were reported missing on Lake Tahoe. At 9:45 p.m., Coast Guard Sector

AEU Presents Safety Awards

The American Equity Underwriters, Inc. (AEU) presented its 2014 Safety Awards at the annual American Longshore Mutual Association, Ltd. (ALMA) Conference on July 19, 2015, in Key Biscayne, Fla.

History

DHS, Postal Service to Dedicate USCG Forever Stamp

U.S. Department of Homeland Security (DHS) and Postal Service leaders are scheduled to dedicate the United States Coast Guard Forever stamp during a ceremony Tuesday at Coast Guard Headquarters.

Fond Farewell to HMAS Tobruk

The Governor-General, His Excellency General the Honourable Sir Peter Cosgrove, AK, MC (Retd), together with the Assistant Minister for Defence Stuart Robert, MP,

Maritime Museum Christens San Salvador Replica

The Spanish ship San Salvador is the embodiment of California’s origin story. The ship’s voyage in 1542, with Juan Rodríguez Cabrillo at the helm, established California

 
 
Maritime Security Naval Architecture Offshore Oil Pipelines Port Authority Salvage Ship Electronics Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1112 sec (9 req/sec)