A Venator is turned into a Rhydonium Bomb

[Lucky]

Let's assume that the fuel suffers a kind of decay with particles which cannot be stopped by anything but layers upon layers of extremely dense armour. Could be neutrinos or something alike you know.
That fuel is not stored inside some specialized tanks apparently, just containers piled up in the hangars.
Besides, the weird nature of this material opens the door to a myriad of other problems.
Perhaps there's some kind of hyperspace related decay as well. In the EU, there were some chrono-something particles, I think, ships left as they arrived into realspace. It was the case in the Thrawn trilogy, maybe when Luke X-wing's returned to normal space I think.
The fact that the whole mass of the reacted fuel cascaded into some kind of singularity would tend to remind me of all the weird implosion/constriction effects relative to superlasers on targets. There's even some kind of ring, again, although not as flat as usual.
You could even say that it's a less refined form of seismic mine, on steroids.

Rhydonium is mined, and that means it has to have a long half-life.

Warships should be heavily armored

Perhaps the initial rainbow blast just disabled the shield generators on the hull?

THis clip is the I was talking about: https://www.youtube.com/watch?v=ywpGjqrxq6c

They should have shields that can be turned on at a moment's notice so the enemy can't get into the hanger like that if they can't quickly close the doors, but we have repeatedly seen this happen

Screwed, like acquisition systems?
After all, sensors wouldn't be in a good shape after taking such a bang in the face.
That's what happens with nukes and sensors on Earth.

THis clip is the I was talking about: https://www.youtube.com/watch?v=ywpGjqrxq6c

You are talking about a ship in excess of kilometer, and that has guns all over its surface. Each gun has its own targeting system, and each turbolaser has its own generator. Normally this setup is stupid, but in this case it should have ensured some AA fire.

Understaffed, obviously. CGI budget against the Republic (traitors!), in other words and plot fiat.

We see something similar happen in at least one other episode. The clones are firing from cover, and have what look like E-WEB for crying out loud.

Because they can?
Perhaps they have other systems as well to suppress fire, but those two droids seemed to do well. The thing is, as usual, those hangars are so damn empty. Nothing like the cramped hangars of Echo Base or Yavin IV which, paradoxically, looked much more equipped.

The two droid aren't putting a dent in the fire, and fire in a spaceship is very bad. The fire will eat up the breathable atmosphere , and release poisons into the air. YOu need to put fires out as quickly as possible.

[359]

The SW masses given are based on Intrepid and Constitution class ships so should not exceed a density of ~4000 kg/m³. Perhaps I have an error?

Also, per the text on SW masses, I would aim for about 750kg/m³ for the whole ship. I suppose for a solid chunk of it your figure is good, though.

It appears that I misplaced a decimal point, it should be a tenth of what I wrote (695 kg/m^3; KE = 1.389 TJ)

Although, it could still be as high as the origionalbecause it is a solid chunk of hull compared to the mostly hollow Venator.

[Mr. Oragahn]

Fantastic catch on associating this blast and Hoth 'nade.

Thanks.
Looks like the image host took down the video. I can't even read it myself anymore.
Are they finding any infringement on such a silly short montage?
Are they going to bust all my animated GIFs as well?
Geez.

I guess I'll have to put the file on some file sharing site and give links when needed.