What Went Wrong on the Dali Before the Baltimore Bridge Collapse? | NOVA | PBS
XquKrInextM • 2025-03-03
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Language: en
in the early hours of Tuesday March 26th
2024 the container ship Dolly has
smashed into and destroyed the Francis
Scott Key bridge in Baltimore the
national Transportation safety board's
lead investigator Marcel Muse has been
working to find out what caused the
dolly to lose power his team has now
released preliminary reports that
suggest how A Series of Unfortunate
Events may have led to this tragedy
ships are complicated they need
electrical power to run a variety of
systems including propulsion and
steering and navigation the
investigation reveals that on the night
of the crash the dolly was running two
of its four power
generators together they produce over 8
megaw of electricity to power nearly
everything on the ship including the
fuel and water pumps for the main engine
and the Hydraulics of the steering
mechanism
ships generate a great deal of
electricity to run and much like your
own house where you have circuit
breakers to ensure that if there is a
disruption or a problem they'll trip
ships have them
too the investigation discovers a loose
cable which lawsuits claim was shaken
Loose by engine vibrations causing a
power surge that tripped two
Breakers disrupting the electrical power
supply the system should have
automatically switched to a secondary
circuit but lawsuits alleged the control
was set to manual so did not
automatically switch causing a blackout
across large parts of the
ship the pumps required to run the main
engine and the steering all shut down
which killed the propulsion and locked
the rudder in
place a small emergency generator kicked
in and the crew closed the trip Breakers
but the engine was still
offline when the ship goes dark the main
propulsion engine of the ship also cuts
off it's not getting the fuel the
lubeoil the water you basically have
stalled that engine but before the crew
had a chance to restart the engine there
was a second
blackout investigators discover that the
generators caused this outage one
lawsuit claims that after the first
blackout the pump supplying the
generators with fuel
shut
down and even when the power came back
on this pump did not restart
automatically the generators would then
have lacked fuel pressure which could
have caused them to run erratically
creating power fluctuations that tripped
the breakers and caused the ship to go
dark again
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file updated 2026-02-13 12:55:40 UTC
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