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

Salvage

Fishing Vessel Sinks, Spills Oil in Alaska

A 58-foot fishing vessel ran aground, sunk and spilled oil in Sitka, Alaska, according to the U.S. Coast Guard. No injuries have been reported, and there have

Runaway Crane Barge Sinks on the Mississippi

The U.S. Coast Guard is working with a team of responders to recover a runaway crane barge that sunk near Convent on the Mississippi River.   The crane barge

Historic WW I Shipwreck Survey Underway

Partnering U.S. agencies have commenced surveying the historic shipwreck of an American lightship shelled and sunk by a German U-boat during World War I nearly 100 years ago.

Maritime Security

Hoover Container Solutions Unveils Asset Tracer

Hoover Container Solutions, a subsidiary of Hoover Group Inc., and a global provider of chemical tanks, cargo carrying units and related products and services, has unveiled its new Liquitrac Tracer,

Willard to Supply Patrol Boats for the Philippines

The U.S. Department of State awarded a contract to boatbuilder Willard Marine, Inc., to provide the Philippine National Police Maritime Group with patrol vessels

Libya Plans to Sell Ex-rebel Tanker

Libya plans to sell a tanker that a former rebel group used in an attempt to bypass the Libyan government and export oil on its own last year, the Tripoli-based state prosecutor said on Thursday.

 
 
Maritime Security Maritime Standards Naval Architecture Pipelines Pod Propulsion Port Authority Salvage Ship Simulators Shipbuilding / Vessel Construction 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: 0.3513 sec (3 req/sec)