Baltimore bridge collapse puts highly specialised role of ship's pilot under spotlight
Baltimore (AP/PTI): The expert pilots who navigate massive ships in and out of Baltimore's port must often manoeuvre with just two feet of clearance from the channel floor and memorise charts, currents and every other possible maritime variable.
The highly specialised role - in which a pilot temporarily takes control of a ship from its regular captain - is coming under the spotlight this week.
Two pilots were at the helm of the cargo ship Dali about 1.25 am Tuesday when it lost power and, minutes later, crashed into a pillar of the Francis Scott Key Bridge, causing the bridge to collapse and kill six construction workers.
While the incident will undoubtedly raise larger questions about ship and port safety protocols, so far there is no indication the pilots on the Dali did anything wrong given the immediate situation they faced.
The ship sent out a mayday call, which gave just enough time for authorities to close the bridge to traffic and likely prevented further deaths. The lead pilot also dropped an anchor, issued steering commands and called for help from nearby tugboats, according to a preliminary timeline outlined by the National Transportation Safety Board.
But in the end, maritime experts say, there was likely nothing the pilots could have done to stop the 95,000-ton ship from ploughing into the bridge.
"It's completely their worst nightmare," said Capt Allan Post, the deputy superintendent of the Texas A&M Maritime Academy in Galveston. "It is terrifying to even imagine not being able to control the vessel, and knowing what's going to happen, and not being able to do anything about it."
Pilots are local knowledge experts, and they give commands to the bridge team for rudder and engine settings, and for what course to steer, Post said.
US pilots are typically graduates of maritime academies and have spent many years at sea before they join a lengthy apprentice programme to learn every aspect of a local area, including memorising charts, he said.
"A ship's captain is a general practitioner, if I was to use a medical term," Post said. "And a pilot would be a surgeon."
Ship pilots have been working in the Chesapeake Bay since 1640, and the Association of Maryland Pilots currently has 65 active pilots on its books.
The association describes on its website how the bay throws up unique challenges, including that pilots must manoeuvre container ships that can sit nearly 48 feet deep in the water through the main Baltimore shipping channels, which are only 50 feet deep.
"Pilots are on the front lines protecting the environmental and ecological balance of the Chesapeake Bay by ensuring the safe passage of these large ships that carry huge quantities of oil and other hazardous materials," the association says on its site.
The association, which didn't immediately respond to a request for comment, has issued a statement thanking first responders to the bridge accident and saying its members' thoughts and prayers are with the families of victims.
There is lucrative pay for pilots because the job comes with plenty of responsibility and risk, Post said.
On a typical day, he said, a pilot might make multiple trips. He or she would be assigned to one ship leaving a port, Post said, and then disembark to board a second, inbound ship.
He said that of the two pilots assigned to the Dali, one would have been in command, with the second able to assist if necessary. He said that, typically, the ship's regular captain would also have been on the bridge, along with one of the watch officers and a couple of other crew.
The NTSB timeline indicated the pilots had less than five minutes from when they first lost power to when the ship struck the pillar.
"They had very little time from the start of the incident until the time they were upon the bridge," Post said. "I believe the pilots did what they could with the abilities that they had onboard the ship at the time to avoid the collision."
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Delhi's air remains hazardous, SC raps officials for 'serious lapse' in ensuring GRAP-4 curbs
New Delhi, Nov 25: Delhi's air pollution levels remained alarming on Monday, with the capital's 24-hour average AQI reading soaring to 349 from 318 the previous day, even as the Supreme Court slammed the city government and police for a "serious lapse" in implementing GRAP curbs.
The apex court, however, asked the central pollution watchdog to consider restarting physical classes in the schools and colleges of Delhi-NCR, noting that students are being deprived of mid-day meals and lack the wherewithal to attend virtual classes.
According to the SAMEER app, which offers hourly updates on the National Air Quality Index, the AQI was recorded at 218 at 9 am, but it rose to 377 at 7 pm, thanks to a low wind speed.
Seven of the 38 air quality-monitoring stations in Delhi reported AQI levels in the "severe" category at 5:30 pm, with the number rising to 14 at 7 pm.
The latest data from the Central Pollution Control Board (CPCB) said Delhi's 24-hour average AQI, recorded at 4 pm, stood at 349.
Bhavreen Kandhari, an environmentalist, said the AQI has risen due to a combination of stagnant winds that have a speed of less than 10 kilometres per hour and dropping temperatures that trap pollutants close to the ground.
The CPCB categorises the AQI as follows -- 0-50 (good), 51-100 (satisfactory), 101-200 (moderate), 201-300 (poor), 301-400 (very poor), 401-450 (severe) and above 450 (severe plus).
Last week, the city endured its highest recorded AQI for the season, reaching a hazardous 495, prompting the implementation of the Stage-4 restrictions under the Supreme Court-mandated Graded Response Action Plan (GRAP) to curb pollution.
On Monday, the primary pollutant contributing to the deteriorating air quality was PM2.5, with levels recorded at 166.9 micrograms per cubic metre at 4 pm.
These fine particulate matters with a diameter of 2.5 micrometres or less, pose severe health risks as these can penetrate deep into the lungs and enter the bloodstream.
The drop in the air quality follows a week of hazardous levels of pollution, with Delhi's AQI surpassing 450 for the first time this season last Sunday morning.
Although the air quality improved slightly on Thursday and Friday, it worsened again on Saturday, with the AQI returning to the "severe" category.
As evening descended on Monday, a thick layer of mist and smog covered the city, reducing visibility and exacerbating the air-quality crisis.
Meanwhile, the Supreme Court asked the Commission for Air Quality Management (CAQM) to consider restarting physical classes in schools and colleges in the National Capital Region (NCR) and adjoining areas, noting that students are being deprived of mid-day meals and lack the wherewithal to attend virtual classes.
The restrictions on physical classes in schools and colleges were imposed recently due to severe air pollution.
The court censured the Aam Aadmi Party (AAP) government and Delhi Police for a "serious lapse" on their part in strictly implementing the GRAP-4 measures, and directed the CAQM to take action against the erring officials.
A bench of Justices Abhay S Oka and Augustine George Masih said the authorities have made no efforts to implement the GRAP-4 measures.
"It is apparent that the authorities mentioned in GRAP-IV clauses 1, 2 and 3 have made no earnest efforts to implement action under clauses 1 to 3. Some police teams were deputed at a few entry points, that also without any specific instructions," it said.
The Centre's Decision Support System (DSS) for Air Quality Management estimated that vehicular emissions contributed 16.4 per cent to Delhi's pollution on Monday. Stubble burning, another major factor, accounted for 11 per cent of the capital's pollution on Sunday.
The DSS provides daily estimates for vehicular emissions, while the data on stubble burning is typically released the following day.
Meanwhile, the daytime temperature was recorded at 25.8 degrees Celsius, 0.9 notches below the seasonal average, the India Meteorological Department (IMD) said.
Humidity levels fluctuated between 85 per cent and 68 per cent during the day.
The IMD has forecast moderate fog for Tuesday, with the maximum and minimum temperatures likely to hover around 26 degrees Celsius and 12 degrees Celsius respectively.
