Additional info on the Baltimore Francis Scott Key Bridge disaster

[clusterchuck]

Is it routine for police officers to be stationed at each end of this bridge at 1:30am?

Baltimore police had roughly 90 seconds to halt traffic before bridge collapsed: report
Six construction workers are still missing and are presumed dead.

Published: March 27, 2024 12:18pm

Police had only about 90 seconds to halt traffic onto Baltimore's Francis Scott Key Bridge after hearing a warning that a container ship was about the hit the structure.

The police officers managed to stop the traffic flow coming from both directions, according to The Associated Press.

Six construction workers are still missing and are presumed dead. The search effort for them in the Patapsco River reportedly resumed Wednesday morning.

“We’re thankful that between the mayday and collapse that we had officials who were able to begin to stop the flow of traffic so more cars were not up on the bridge,” said Maryland Gov. Wes Moore, according to The Daily Beast.

Eight road crew members and their vehicles were already on the bridge and two were rescued.

The ship hit the bridge early Tuesday morning after losing power.

https://justthenews.com/events/police-h ... sed-report

[clusterchuck]

Clearly the Dali cargo ship was under way with power all the way to the moment of impact.

The exterior lights on the ship can be shut off, that doesn't necessarily mean you "lost power".

The most striking bit of information I can see is the speed.

The ship increased speed to a maximum speed (in this timeframe) of 8.7KN - which it reached approximately 4 minutes before impact.

At approx. 4 minutes before impact it also initiated a turn directly on a heading for the pylon it ultimately made contact with.

Note that the reports are that the ship lost power, but the ship maintained its speed after the turn of 7.6KN until impact.

I argue that the ship never lost power and the loss of 1.1KN of speed was due to the turn the ship initiated before contact.

As an example- A ship traveling at 22.7KN can expect to take 29 minutes to slow down if the engines are moved to "STOP" - this gives us an approximation for how much speed a ship without power might lose per minute.

Rate of decrease = 29 minutes / 22.7 knots ≈ 1.28 knots per minute

Video data of speed for the Dali and also of example of how long it takes for a ship to slow below

[Evil]

Assuming a constant rate of deceleration, which of course is not the case

[Shred]

Proper investigation hasn't even started yet.
Engines and control systems onboard that ship will be properly and fully studied by experts from the ship builder itself as well as independent engineers.
And the design of the bridge itself will also be studied in order to improve bridge safety.

[clusterchuck]

We were told, and visual "evidence" seemed to "confirm", that in the last moments before impact, power systems were going down/up/down.

In a vessel of this magnitude, redundant power systems and fail safe mechanisms would be kind of important, maybe even critical, don't you think?

ME TOO.

[clusterchuck]

The Captain of the Dali is Ukrainian?
OH, this is getting interesting.
The fact that someone discovered this, and "I" posted it here will likely trigger predictable response from the usual suspects.
----------
So for the Dali saga:

Listed on the http://balticshipping.com website earlier today was the Ukrainian captain

If you visit their site now they have scrubbed him from their site and removed cached data on the wayback machine.

If you go to http://archive.is you can find the cached page where the Ukrainian is still shown from earlier today.

https://archive.is/LeT7C

[Shred]

Until all systems on the ship have been studied by engineers you cannot state for certain what happened to it.

Neither you, or I are experts.

We don't know yet what happened on the ship.

And anti Ukrainian racism? Come on, don't be daft lad.

[thelionofthenorth]

Of course the conspiracy theories sprouted and of course Fuster falls for it.

[clusterchuck]

Based the last few replies (and hundreds or thousands prior), this message board exists to post and discuss "finished investigations" only - with a strong preference for the origin of those "investigations" to be approved resources such as "name brand" media, government or other "recognized authority".

Otherwise people who post information counter to the above are labeled (ignorant/gullible/MAGA/conspiracy theorist/fiil_in_the_blank).

TWIS: attempts to suppress free speech and independent research are given the attention they deserve.

[clusterchuck]

After seeing the tweet above, my first question was: what's a "Federal Channel"?

Code of Federal Regulations
PART 329—DEFINITION OF NAVIGABLE WATERS OF THE UNITED STATES

Authority:33 U.S.C. 401 et seq.

Source:51 FR 41251, Nov. 13, 1986, unless otherwise noted.
https://www.ecfr.gov/current/title-33/c ... I/part-329

Federal navigable channels. In water ways (including large rivers) the feds take jurisdiction for navigation. That’s why they will dredge things out - and - also why state governments can’t construct a bridge over a navigable waterway without meeting minimum clearance heights for that navigation channel.

Federal Channels GIS resources:
https://www.arcgis.com/home/item.html?i ... 4edae76586
https://www.arcgis.com/home/user.html?u ... PMapDirect