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

Salvage

Busan: Tugboat Sinks, Two Dead

Two crew members died after their tugboat sank in waters off the southeastern port city of Busan in Korea, Yonhap reports quoting the authorities.   The accident took place around 12:30 p.

Second Sea Lion Rescued from California Oil Spill Dies at SeaWorld

A second sea lion rescued from along California's oil-fouled coastline near Santa Barbara has died at SeaWorld San Diego, where veterinarians are still caring for

ARDENT: The New Name (& Familiar Face) in Maritime Salvage

Last month Svitzer and Titan Salvage announced plans to merge their salvage operations. Peter Pietka, former chief executive of Svitzer Salvage, takes the helm

Maritime Security

NSA Chief Urges 'Safe' Internet Under Equivalent of Law of the Sea

The U.S. National Security Agency chief called on Wednesday for an "open, reliable and safe" Internet governed by international rules akin to the Law of the Sea,

US Counter-piracyTeam Earns Panama's Approval

Meridian’s counter-piracy teams may now operate aboard vessels flying the Panama flag, following a vetting process that validated the quality of the US-based private maritime security company.

HHI Launches Korea’s Second Minelayer

Shipbuilder Hyundai Heavy Industries (HHI) launched the second minelayer, MLS-II Nampo, for the Korean Navy.   In attendance at the MLS-II launching ceremony were Baek Seung-joo,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Naval Architecture Ship Electronics Ship Repair 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: 0.1785 sec (6 req/sec)