Posted on 04/01/2024 12:43:54 PM PDT by DEPcom
Dali size containership steering system. How it’s designed to not hit Francis Scott key bridge. From Youtube
Should
RE: steering system design
A way for everyone to stay calm.
https://m.imdb.com/title/tt0095031/mediaviewer/rm717730561/
She swooned at her wedding.
I saw reports that the ship lost all power a few days prior to the incident while still moored at the wharf. Something about too many refrigeration containers tripping the main power breakers, IIRC.
Thank you for posting the video. It was informative. I remain grateful to people like the engineer in the video who come forward to educate others.
So I guess now we know why there was that big gout of black smoke that came out of the ship just before it hit the bridge. They were starting the emergency backup diesel engine to get emergency power to the steering gear pump motors.
00:39:00 Ship departed from the Seagirt Marine Terminal
01:07:00 Ship entered the Fort McHenry Channel [NOAA Nautical Chart 12281]
01:24:00 Ship traveling at a heading of 141 at about 9.2 mph [8 knots]
01:24:59 Censor data stopped recording, but audio recording continued
01:26:02 Censor data recording resumed
01:26:39 Pilot made a radio call for tugs to assist
01:27:04 Pilot ordered an anchor drop
01:27:25 Pilot radioed that all power was lost and asked for bridge to be closed
01:29:00 Ship was traveling less than 8 mph [less than 7 knots]
01:29:33 VDR recorded sounds consistent with crash, and dash cameras show bridge lights go out
01:29:39 Pilot reports to Coast Guard that the bridge is downRef.: NTSB Timeline Reveals Crucial Minutes Leading Up to Baltimore Bridge Strike
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Official Footage of the Francis Scott Key Bridge Collapse - 7:22, no audio
[Watch truck moving from right to left - 0:47/7:22]
[It appears to be last vehicle in motion on bridge.]
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How To Start The Ship's Main Engine: From Preparation to Full Away
How We Steer A Cargo Ship | Life At Sea
Why No Tugs MV Dali/Key Bridge Baltimore
Ships emergency diesel generator and switchboard
How to let go an anchor - Anchor dropping Step by Step Procedure
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NOAA - Tides & Currents - Baltimore, MD
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Yes!
Wasn’t that ship involved in an earlier ‘accident’?
I read somewhere that the ship was not really the Dali. It was said that this was one of the 13 EVERGREEN ships, and that it had the name “Dali” painted on it to disguise it for some reason. And in fact it may actually be the Evergreen ship that ran aground in the Suez Canal a while back. And that in both cases, clandestine sex trafficking was/is involved. ???
Thanks for posting. This is a very good explanation by a similar cargo carrier ship’s chief engineer. He clearly knows his stuff and explains it well.
It looked like the emergency diesel generator was unable to handle the load after the main diesel generator failed/tripped. So the casualty that stopped the main generator also stopped the emergency gen, or the switchboards were improperly aligned, or maybe both. Once power was lost to the electrical motors that run the hydraulic rams was lost, that rudder wasn’t moving.
USN ships have a bit more redundancy in power (automatic bus transfers, multiple generators online, automatic load shedding) and steering controls, as well as the crew to man aft steering for transits like this. My sailors (Interior Communications Electricians) actually manned aft steering, and we performed extensive pre-underway checks to ensure everything was properly configured, aligned and tested. We had specific configurations for these transits and other “restricted maneuvering” situations, ensuring maximum redundancy.
That’s a very hectic five or six minute’s for the pilot in charge. Don’t know whether it was the harbor or the bay pilot in charge.
When they make the movie, the pilot can be played by Rowan Atkinson (of Mr Bean fame) employing Mr. Bean affectations.
I see it as an unfortunate accident. Sometimes it’s that simple.
Really? Give us a link or it didn’t happen.
I'm sure it's also carrying nuclear weapons for Iran. No worries, as Gina Haspel is on the way with a SEAL team to retake the ship and save the kids from Hillary. /S or maybe /Q
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