this post was submitted on 28 Mar 2024
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People are saying this?
You can see the boat crumpled the bridge like a piece of foil. It can obviously do it.
People are crazy. People claim planes didn't hit the twin towers.
And in both cases, there are the "the planes/boat didn't do it alone" people.
Lisa's Reverse Vampires.
It was full of cargo at the time, right?
Even without it, it would have pulverized that bridge.
Yeah it was over 100,000 tons going at around 8 knots. Not exactly high speed, but think of the momentum of something that's 100,000 tons.
Oh yes... Right here on Lemmy some person said they should just drop some heavy concrete blocks near the bridge bases to stop the ship ...
No, they said they should add them to deflect the ship away from the pylons.
Fenders are common on modern bridge designs and work.
https://en.wikipedia.org/wiki/Bridge_protection_systems
Were you the person who was downvoted for constantly arguing that nothing could be done despite being given lots of information otherwise?
We MUST construct additional pylons.
Nope, I did argue that it was not as easy as someone was claiming (dropping "heavy blocks")
Only one person replied with a link, but their very link said no protection would stop this specific accident
PS: you should also read your links. They are not super detailed in that wiki article but nothing there detour, much less stop, the ship that knocked down the Baltimore bridge
Seems like those are to deflect canoes and pontoon boats, maybe a small pleasure craft or fishing boat. Not a fully loaded cargo ship. I don't see anything that could have prevented this short of using tug boats to navigate the channel. The boat lost power and drifted into the bridge. Nothing short of a land mass was going to stop it once it lost power.
No it does not seem like that.
These systems are designed to protect bridges before a ship hits it.
https://www.sciencemediacentre.org/expert-reaction-to-baltimore-bridge-collapse/
Look at what the fucking engineers are all saying, it all boils down to “We would expect to see measures in place to redirect the ship because a bridge cannot survive a direct hit.”
The bridge was built in the 70s and nobody wanted to spend the money to update the safety measures to protect from modern cargo vessels.
I see what you mean. Very cool site. Thanks for sharing. I hope the fediverse is used to marshal actual expert, similar to how this site does it, but more crowd sourced, like Wikipedia. Anyhow, seems like the bridge should have been replaced in addition to deflection devices.
The very article you linked, from the first of the experts, states, “There was no way to protect the bridge, even if there was a warning system in place. If a ship like this collides on with any bridge it may take it down.”
Each expert after basically says the same thing. Even with extra protections using modern technologies, a head-on collision from a boat of this size and weight would destroy almost any bridge, and there is no practical fender system to effectively deflect a ship of this size. Most suggestions are that a more modern bridge would simply have a wider channel, but a modern bridge with modern fenders and plant of dolphins would not have stopped a head-on collision like this. And a wider channel wouldn't matter if a boat if this size still ran directly into one of the (wider spaced) direct supports.
Other experts here note radar and sonar protections and lighting, none of which would have mattered here because the problem is the Dali lost power and navigation, which is what caused them to run directly into the bridge pylon. The pylon could have been made out of neon lights: they couldn't turn. I don't think you're taking into account just how massively heavy this ship is.
That says there is no way to stop a head on collision, which is true. Hence why you divert the boat before it hits the bridge structure.
As I have already mentioned and as many of the other professionals in that site point out:
And
And
And
And
That's basically what a "dolphin" is and you can build them arbitrarily large. The only reason this bridge wasn't retrofitted with adequate protection was money. As with any large-scale disaster, there are multiple failures that lead to the incident. The boat is clearly to blame, but so is the bridge protection system.
I've seen videos of much smaller ships running aground, and they manage to win against the earth itself for a considerable distance before they stop. Some rebar and concrete pylons aren't going to cut it.