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

Maritime Security

Fiji: Boats Registeration a Must

Under new maritime laws all vessels and boats using Fiji waters have to abide by the rules and regulations under the Marine Transport Decree, reports FBC   Maritime

Turkey Launches Amphibious Ship

Turkey launched the 140-meter amphibious ship "Bayraktar," the first of two vessels that are part of a domestic Landing Ship, Tank (LST) project, reports Local media.

USCG Urge Caution Ahead of Hurricane Joaquin

The Coast Guard urges the public Thursday to use extreme caution and to prepare for the onset of heavy weather, extreme sea conditions, storm surge and high

Maritime Safety

USCG: Body Found in Search for Ship Sunk in Hurricane

The U.S. Coast Guard on Monday said its crews had found a body and an empty, heavily damaged lifeboat in their search for the cargo ship El Faro, believed to have

Hunt for Missing El Faro Ship Enters 4th day, Hopes Fade

Search and rescue teams resumed scouring the seas on Monday for the missing cargo ship El Faro and it mostly American crew, after it was caught in the eye of Hurricane Joaquin four days ago, the U.

USCG: Missing Cargo Ship El Faro Believed to Have Sunk

The U.S. Coast Guard now believes that the missing cargo ship El Faro sank after sailing into the path of Hurricane Joaquin in the Bahamas, a spokesman said on Monday.


Smith Taken on Rolls-Royce Holdings Board

Rolls-Royce Holdings plc today announces the appointment of Sir Kevin Smith CBE as a Non-Executive Director.  Sir Kevin will join the Board with effect from

Brazil Court Allows Lula Questioning in Petrobras Corruption Case

Brazil's Supreme Court authorized the questioning by Federal Police of ex-President Luiz Inácio Lula da Silva as a witness in a broadening corruption case focused

Port of LA: 10 Years of Clean Air Gains

Port Exceeds 2014 Emission Reduction Targets for Diesel Particulate Matter (DPM), Nitrogen Oxides (NOx) and Sulfur Oxides (SOx), with SOx Emissions Nearing Zero   Findings


Willard to Build 3 Survey Ships for NOAA

NOAA awards shipbuilding contract to Willard Marine for the construction of three aluminum survey vessels   Willard Marine informs it was awarded a contract to

Maritime Contracts Maritime Security Maritime Standards Naval Architecture Navigation Salvage Ship Electronics Ship Repair 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: 0.2036 sec (5 req/sec)