Posted on 03/29/2024 6:18:05 PM PDT by Paul R.
In this episode - maritime historian at Campbell University (@campbelledu) and former merchant mariner - discusses the timeline released by the NTSB from the Dali's Vessel Data Recorder and lays out some of the questions, issues that have been raised, and questions that need to be answered.
(Excerpt) Read more at youtube.com ...
I stand corrected on the wind, and while I have been mentioning current, I missed the likely flow from the Curtis Bay channel.
Several great links are included for anyone wishing to learn more (as we ALL should, always.)
Many great points are made by Sal Mercogliano concerning what does and doesn’t happen on these huge ships. :-)
He does a good job explaining what is happening .I plan on watching the other videos he mentioned.
Some cranes start to arrive at the FSK collapse ..
Superb. I had forgotten another bridge was taken out the exact same way in Tampa.
The same way in that a huge ship struck a supporting foundational pier. But different in that the cause was one heck of a storm and spontaneous wind gusts that blew that ship (in Tampa Bay) off course. The ship had emptied its cargo in Tampa and was off somewhere in the Gulf, riding high in the water and with a lot of sail area. But it had power. Another similarity was the bridge decking ending up draped over the bow. I believe the death toll in Tampa was 31-33 people, the majority of which were on a Greyhound bus that took the big dive.
Smaller, but very significant in the region was the Eggners Ferry Bridge across Kentucky Lake in 2016.
That one ended up with a bridge section on the bow as well.
Ship hit bridge. Bridge fall down. Go boom.
The catastrophic collapse of the Francis Scott Key Bridge in Baltimore was the result of its design that had limited redundancies and is similar to other past bridge collapses. Those catastrophic failures were caused by just one weak element (Tampa, Florida and Minneapolis are examples). Built in 1977, as a continuous through truss bridge, the Francis Scott Key Bridge lacked the redundancies found in more modern designs. The cantilever truss is a better design with protective “barriers” that protect the pier (as in the rebuilt Sunshine Skyway Bridge in Tampa).
I am glad there is better bridge design being utilized these days. The ships going under them are vastly bigger than when the key bridge was built.
Yes, but I think this guy does a fantastic job of explaining what happened here.
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