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The Kerch Bridge Thread

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The Kerch Bridge Thread

Old 8th Oct 2022, 16:14
  #61 (permalink)  
 
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Not sure if anyone has already posted this. Suffice to say, the rail bridge looks in need of some attention
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Old 8th Oct 2022, 17:03
  #62 (permalink)  
 
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Bridge from another angle...


colorful if nothing else...
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Old 8th Oct 2022, 17:19
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Is there a significant incline on the railway as it reaches the steel arch section over the sealane? I'm wondering if that is why the fuel train is stationary there. Is there a need for an additional engine for that section? Or is there a weight/ vibration limit so a need stop while another train passes in the other direction?
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Old 8th Oct 2022, 17:26
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Slow moving train stopped because the explosion happened and was able to stop quickly because it was going upgrade?
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Old 8th Oct 2022, 18:03
  #65 (permalink)  
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KERCH DAMAGE: @pmakela1 posts this photo of damage to the road spans-- note the blast has pushed the spans upward from the piers. This indicates the explosion came from below.
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Old 8th Oct 2022, 18:05
  #66 (permalink)  
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Wagner affiliated channel Grey Zone Claims that #Russia's defense minister Shoigu has resigned following the attack on the Crimea bridge.

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Old 8th Oct 2022, 18:08
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Originally Posted by ZeBedie
Slow moving train stopped because the explosion happened and was able to stop quickly because it was going upgrade?
At least some of the tank-cars had fuel in them, in general it appeared full judging by the fire. This means it was most likely heading NW into the Crimea immediately before the deep water bridge section. From what I can see online the causeway section at that point is very gently sloping upwards.(SE>NW) but it is a gentle incline. I still haven't seen anything definitive re whether a locomotive was attached when the explosion occurred.

I'm not sure how much damage there really is to the rail bridge structure. For sure all the ancilliary walkways are toast, and cable runs too. But I don't think one can extrapolate from that to the reinorced concrete itself. It is one thing being a lump of concrete above a blaze. It is quite another being a lump of concrete underneath a blazing puddle where by definition the puddle bottom is still cool enough to be a liquid.(A candle does not disintegrate just because there is a molten pool on its top). The rails etc probably aren't in good shape either. But it is the structure that is the real issue and we have nothing much to base an opinion on apart from some soot stains.

(I think I got my N and S muddled this morning, not that it mattered. Apologies. It is not obvious which direct any bomb-boat would have approached from, both are possible ... )
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Old 8th Oct 2022, 18:16
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Devil

Originally Posted by NutLoose
OMG…… THEY HAVE HIT IT………….. THE KERCH BRIDGE!!!! Apparently.

Wow…



https://twitter.com/I_Katchanovski/s...01802345291782

OMG? Do please calm down Nutty before you blow a gasket. Browse:copy and paste - browse:copy and paste- browse:copy and paste. Wash:rinse:repeat- wash:rinse:repeat- wash:rinse:repeat. A dog chasing its tail. Norman F. Dixon had it pegged in the 70s.

Don't waste too much time reading this Nutty - just think of what you could missing on the so many other sites. Browse: copy and paste. FOMO - you'd best keep the browser moving and then scurry back here to paste.
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Old 8th Oct 2022, 18:26
  #69 (permalink)  
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Rather ironic that Channel 5’s movie tonight is a Bridge to Far..
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Old 8th Oct 2022, 18:27
  #70 (permalink)  
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😂😂😂😂 Porridge…

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Old 8th Oct 2022, 18:36
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Cool

Originally Posted by NutLoose
Rather ironic that Channel 5’s movie tonight is a Bridge to Far..
Do you have a link to that Nutty?
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Old 8th Oct 2022, 18:40
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Kinda reminds me of a song for those of you old enough to remember the movie….


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Old 8th Oct 2022, 18:40
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I think you're right petit-plateau - the train was probably stopped before the explosion.
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Old 8th Oct 2022, 19:55
  #74 (permalink)  
 
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Originally Posted by Kent Based
Is there a significant incline on the railway as it reaches the steel arch section over the sealane? I'm wondering if that is why the fuel train is stationary there. Is there a need for an additional engine for that section? Or is there a weight/ vibration limit so a need stop while another train passes in the other direction?
Freight railroads want an incline of less than 1.5°. There won't be an abrupt or steep section. If you look at pictures of the bridge you can see the rail line is constant height.
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Old 8th Oct 2022, 20:06
  #75 (permalink)  
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According to Tass the trains are running again.

First passenger train passes over Crimea bridge after incident

It departed from the capital city of Crimea on schedule at 17.10SIMFEROPOL, October 8. /TASS/. The first passenger train has successfully gone over the entire Crimea bridge after the incident, the Grand Service Express transport company told reporters on Saturday.

"Simferopol-Moscow Bi-level Train No.28 has passed over the Crimea bridge. It was the first train to cross [the bridge] after the emergency. Train No.28 departed from the capital city of Crimea on schedule at 17.10 and has passed over the bridge," the statement says.
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Old 8th Oct 2022, 20:17
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Originally Posted by meleagertoo
Shaped charges most assuredly must NOT be in direct contact with the target. They require a standoff distance related to a multiple of the width of the charge as per the individual design. In the case of a custom-made charge built into a boat it could be a vary wide device ndeed - say a metre. A 5 times standoff distance would be at peak effitiveness at 5m, about the height of the bridge I'd guess, and such a charge laid along a boat is in the perfect alignment to sever a structure like a bridge from edge to edge.
In any case a sufficiently large in a boat under a bridge is simply going to lift it up in the air and let it drop or with enough brisance simply shatter the concrete. The blast pressure will be 'loosed' (sic) in all directions, but the water will tend to reflect much of it upwards where you want it.That'd do the job too.
If you imagine a ton or more of explosive is defeated by a 20ft airgap or only leaves a 'crater' the size of a vehicle you are way, way off the mark.
The lack of obvious scarring suggests a blast from below which had the added effect of projecting debris upwards to puncture the tank-cars.
No way was this air delivered or the defences would have lit up like Novemner 5th.
A shaped charge designed to sheer metal needs to be in contact with the metal, a directional shaped charge for penetrating an object can be set up with an air gap. However what you / others are suggesting is that they used a shaped charge to fire vertically along the full width of the bridge to sheer the steel and fragment the concrete to allow it to fall back in upon itself. The length of the boat would therefore have to be the width of the double roadway, at the optimum distance from the underside of the bridge, taking into account tides, waves and wind to be close to 90 deg to the bridge.
However if it was suggested that it was a BFOB, (Big F Off Bomb), then that isn't a shaped charged and that is more plausible.
There were suggestions that there were multiple air strikes (incl MLRS) yesterday evening so perhaps a missile did manage top get through, especially as the air defences were already lit up like Novemner 5th (sic).
After all the Moskva was sunk by missiles that were supposedly not able to do their job against a guided missile cruiser.
Fanciful the idea may be, but the idea of a Ukrainian boat travelling such a great distance without being spotted also takes a leap of faith.

Time will tell and there is little point in willy waving when the facts are extremely limited.

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Old 8th Oct 2022, 21:06
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This kind of suggests it ‘‘twas the boat and the rail road was happy collateral damage



Evidence
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Old 8th Oct 2022, 21:17
  #78 (permalink)  
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There is a reasonable assumption that a UUV was used to do this attack. Curiously, it is coming from the Sea of Azov. Russian controlled territory.

If so, who dunnit?
  • Is Russia so porous that Ukrainian SF are moving effortlessly through the area?
  • Or SF are cunning enough to move a 24'-30' UUV through Russia to strike from the north side of the Kerch?
  • Is this a power play inside Russia to undermine (bomb) Putin and his war machine?
  • Or did a UUV decide to drive beyond a target and then circle back? As in through an area that has security and CCTV coverage?
Curious.
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Old 8th Oct 2022, 21:56
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A different angle showing the damage to the bridge.

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Old 9th Oct 2022, 00:56
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Originally Posted by ratpackgreenslug
Do you have a link to that Nutty?
https://www.channel5.com/show/a-bridge-too-far

see you next Tuesday green slug thing
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