Sonar Imagery Assists Bow Mariner Investigation

Tuesday, March 09, 2004
(Photo credit: NOAA)

The Coast Guard has released two multi-beam sonar images taken by the NOAA ship Rude of the sunken tanker Bow Mariner. The images, taken March 4, are among a suite of side-scan sonar and multi-beam images provided by RUDE to the Coast Guard for use in its investigation of the cause of the explosion that sank the vessel on February 28.

Rude (pronounced Rudy) found the wreck on March 2, and initial side-scan imagery showed the placement and orientation of Bow Mariner. However, Rude had to discontinue operations because of bad weather. The ship returned to the scene during better weather and collected additional sonar imagery on Thursday, March 4, for the Coast Guard to review. Multi-beam sonar systems provide fan-shaped coverage of the seafloor similar to side-scan sonars, but the output data is in the form of depths rather than images. Instead of continuously recording the strength of the return echo, the multi-beam system measures and records the time for the acoustic signal to travel from the transmitter to the seafloor (or object) and back to the receiver. RUDE’s multi-beam system is attached to its hull, rather than being towed like a side scan. Therefore, the coverage area of the seafloor is dependent on the depth of the water, typically two to four times the water depth. The NOAA fleet of research and survey ships and aircraft is operated, managed and maintained by NOAA Marine and Aviation Operations. NMAO includes commissioned officers of the NOAA Corps and civilians. The NOAA Corps is the nation’s seventh and smallest uniformed service, and, as part of NOAA, is under the U.S. Department of Commerce. The Corps is composed of officers—all scientists or engineers—who provide NOAA with an important blend of operational, management and technical skills that support the agency’s environmental programs at sea, in the air, and ashore.

Maritime Reporter March 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Salvage

Stranded Virginia Beach Bulker Salvage Plan Set

The Coast Guard advises it is in the final stages of reviewing a salvage plan that is scheduled to begin Friday morning to move the 751-foot bulk carrier, 'Ornak',

Obama Offers US Aid to S.Korea Following Ferry Accident

U.S. President Barack Obama on Thursday expressed condolences to the families of the victims of the South Korean ferry sinking and said the U.S. military will provide

USCG Responds to Vessel Fire

The U.S. Coast Guard (USCG) reported it is responding to a report of a vessel that caught fire and became disabled with two men and a dog aboard south of the McCormick

Maritime Security

Coast Guard tactical air squadron holds change of command ceremony

Capt. Kevin P. Gavin relieved Capt. Donna L. Cottrell as commanding officer of Coast Guard Helicopter Interdiction Tactical Squadron Jacksonville during a change of command ceremony at HITRON Friday.

Captain of capsized S Korean Ferry Arrested

The captain of a South Korean ferry that capsized, leaving 29 people dead and 274 others missing, was arrested on Saturday, the country's Yonhap news agency said.

Homeland Security Secretary Visits Ingalls Shipbuilding

Huntington Ingalls Industries' Ingalls Shipbuilding division apprises it has hosted a visit by Secretary of Homeland Security Secretary Jeh Johnson and U.S. Rep.

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Navigation Offshore Oil Pod Propulsion Port Authority Ship Electronics Ship Simulators Shipbuilding / Vessel Construction
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: 0.1494 sec (7 req/sec)