Baltimore Bridge Black Box May Help Solve Mystery Of Ship Drifting Off Course.

Photo: Wikimedia commons. The Francis Scott Key Bridge, Baltimore in 2015.
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U.S. federal safety investigators say they have recovered the data-recording black box from the cargo ship that crashed into a Baltimore bridge. Also, divers on Wednesday recovered the remains of two of the six workers who plummeted into the Patapsco River when the span collapsed.

The black box or Voyage data recorder, or VDR, is a data recording system legally required for all vessels.

It then records all navigation information in an externally mounted protective storage unit. The protective storage unit is a tamper-proof unit designed to withstand the extreme shock, impact, pressure and heat, which could be associated with a marine incident (fire, explosion, collision, sinking, etc.).

Investigators from the National Transportation Safety Board are hoping the data box will help answer why the Dali freight vessel lost power shortly after setting sail for Sri Lanka in the early morning darkness Tuesday and then minutes later crashed into one of two main support pillars for the Francis Scott Key Bridge.

NTSB Chair Jennifer Homendy said investigators are also planning to interview the ship’s crew, which sent out a mayday distress call shortly before the collision with the bridge, a warning that gave police and transportation officials moments to block motorists from driving onto either end of the bridge.

The workers, from Mexico and several Central American countries, had been filling potholes on the major U.S. eastern seaboard highway running across the bridge. A large portion of the fallen bridge landed atop the bow of the freighter, but efforts to untangle the debris have yet to start.

Baltimore City Fire Chief James Wallace told CNN that local, state and federal dive teams will begin the process of underwater mapping of the accident area on Wednesday.

The disaster has forced the closure of the Baltimore, Maryland, port, one of the busiest in the United States, stopping freight shipments in and out of the city, as well as cruise ship vacations.

U.S. Transportation Secretary Pete Buttigieg said closure of the port would have a “major and protracted impact to supply chains.” The Port of Baltimore handles more automobile freight than any other U.S. port — more than 750,000 vehicles in 2022, according to port data.

President Joe Biden vowed Tuesday that the bridge would be rebuilt as quickly as possible and that the federal government would pay for it, but some analysts say that it could be at least a year before a new bridge is completed.

Biden’s comment does not seem to take into account that some of the cost of replacing the bridge might come from insurance payments.

Maryland Governor Wes Moore said ending the rescue effort for the missing workers before darkness set in Tuesday evening was “a really heartbreaking conclusion to a challenging day.” The governor said authorities at the federal, state and local levels will use every resource available to find their remains.

The Guatemalan foreign affairs ministry issued a statement late Tuesday saying two of the workers were Guatemalan nationals — a 26-year-old from the Petén region and a 35-year-old from the Chiquimula area.

A nonprofit organization that provides services to the Baltimore immigrant community says one of the missing workers was from El Salvador, had lived in Maryland for 19 years and was married with three children. News outlets identified the other workers as being from Mexico and Honduras.

Clay Diamond, executive director of the American Pilots Association, the organization that represents workers responsible for steering seagoing vessels, said the Singapore-flagged Dali container ship had a “total blackout” of engine and electrical power minutes before the collision.

Video showed the bridge quickly collapsing into the river after the Dali collided with a support column. The vessel, 48 meters wide and 300 meters long, was loaded with cargo containers.

Synergy Marine Group, managers of the Dali, issued a statement saying that all 20 of its crew members and the two Maryland harbor pilots on board were accounted for and there were no reports of injuries on board the vessel.

U.S. news outlets are reporting an inspection of the Dali last year at a port in Chile found that the vessel had a deficiency related to “propulsion and auxiliary machinery.”

The inspection, conducted on June 27 at the port of San Antonio, specified that the problem concerned gauges and thermometers. A later inspection, however, found no defects.

Singapore’s Maritime and Port Authority said in a statement that the vessel passed two separate foreign-port inspections last June and September. It said a faulty fuel pressure gauge was rectified before the vessel departed the port following its June inspection.

The 47-year-old, 2.5-kilometer-long Francis Scott Key Bridge was a major link in the interstate highway that circles the city of Baltimore. Biden said 30,000 vehicles crossed the bridge on a typical day.

The bridge was named after Francis Scott Key, the writer of The Star-Spangled Banner, a poem later set to music to eventually become the U.S. national anthem.

Key was inspired to write the poem after witnessing the British bombardment of a major U.S. military fort in Baltimore in 1814 during the war that began in 1812.

Source: VOA
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