Saturday, August 06, 2005

Closer and Closer

Interfax:

23:46 - Only two hoses and one steel cable remain to be cut off in the rescuingoperation of the mini-submarine AS-28 - Russian Pacific Fleet pressservice
23:42 - The crews involved in the rescue operation are taking steps to begin the emergency lifting of the mini-submarine. - Russian Pacific Fleet pressservice.

Almost there...

2 Comments:

At 5:15 PM, Blogger Steven Den Beste said...

I don't know a lot about submarines, so take this for what it's worth.

It seems to me that the crew of the sub has long since dumped its ballast, so the sub should have considerable positive buoyancy. Which would mean that even if the crew is unconscious (or worse) when the last cable/whatever is cut, the sub should pop to the surface like a cork.

Does that make sense?

(I know that in most subs the ballast is a water tank, which gets filled with air to gain buoyancy. On the deep-sea submersible Alvin, the ballast is a big piece of steel held onto the bottom of the sub by electromagnets, and to dump the ballast all they do is to cut power to the magnets. Any idea what the ballast is on this sub?)

 
At 5:29 PM, Blogger PigBoatSailor said...

I believe the ballast on this sub, actually a bathyscaphe, is liquid, such as petroleum. At least, that is what one of the journals I was reading seemed to indicate... If so, I am not sure how easy it would be to dump.

 

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