A question about gauges

Fidd · 12-12-19, 01:19 PM

Quote:

Originally Posted by adamperkins

I've always had this queston in my mind, really hope there will be an adequate answer

I'm coming to suspect it's a measurement of the captain's intra-cranial vacuum pressure. If you watch it carefully, every time the pressure reduces, it happens immediately after he's been a clot!

GreyLynx · 12-13-19, 12:52 PM

Hi Fidd,
I think the 2 meters measure the air pressure inside the FWD and AFT MBTs.
On the surface, blowing the 2 MBTs will create a pressure of about 1 kg/cm² in each tank.
If you flood the tanks, the pressure is reduced to almost zero.

If you blow the tanks at a depth of 140 m, you'll see the pressure build up to about 2 kg/cm² and then reduce to 1 kg/cm² when the boat reaches the surface.

I think I read somewhere that the pressure had to be carefully monitored not to exceed a certain level. I noticed that after performing an emergency surface (blowing Main Ballasts) from a depth of 200 m, the compressor leaks all the way down to zero, at which point the diesel can't be started, nor can the compressor! If that's the case, what is the critical pressure not to exceed?

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12-13-19, 12:52 PM	#2
GreyLynx Duplicate account Not Allowed Join Date: Mar 2019 Location: The Great White North Posts: 18 Downloads: 22 Uploads: 0	Hi Fidd, I think the 2 meters measure the air pressure inside the FWD and AFT MBTs. On the surface, blowing the 2 MBTs will create a pressure of about 1 kg/cm² in each tank. If you flood the tanks, the pressure is reduced to almost zero. If you blow the tanks at a depth of 140 m, you'll see the pressure build up to about 2 kg/cm² and then reduce to 1 kg/cm² when the boat reaches the surface. I think I read somewhere that the pressure had to be carefully monitored not to exceed a certain level. I noticed that after performing an emergency surface (blowing Main Ballasts) from a depth of 200 m, the compressor leaks all the way down to zero, at which point the diesel can't be started, nor can the compressor! If that's the case, what is the critical pressure not to exceed?