SUBSIM Radio Room Forums - Holes in the pressure hull

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- Dangerous Waters (https://www.subsim.com/radioroom/forumdisplay.php?f=181)

- - Holes in the pressure hull (https://www.subsim.com/radioroom/showthread.php?t=92615)

Quote:

Originally Posted by Deathblow

btw what's the "Steam Generator Blowdown" and the PCST overboard? Oh and a "Hydrogen overboard dump"? Sounds like something outta StarTrek.

Steam generator blowdown and PCST are nuc things. TMI for the most part.

Hydrogren overboard dump. Okay, we make our own oxygen underway. You do that by splitting Hydrogen and Oxygen (aka. h20, also known as water, something you have LOTS of access to). When you do that, you let the oxygen inboard and you have to do SOMETHING with all that hydrogen. You let it go right over the side (so to speak).

Gotta beathe, gotta eat, and you gotta poop. Sleep is optional.

Sweet five ex-nukes on the forums. Bill, Bubblehead, Henson, and TopTorp, and SubSailor.... hm... who else am I forgetting. Nice know that some opinions are based on RL experience and not internet browsing like my own :lol: :-? :oops: :(...

...though I have read a book or two... http://www.subsim.com/phpBB/viewtopic.php?t=51686

Quote:

Originally Posted by Deathblow

...who else am I forgetting.

Sonar732 ;)

Good times, good times...here is the damage control trainer.

https://www.npdc.navy.mil/slc/nss/dct041901.htm

The fire trainer...

https://www.npdc.navy.mil/slc/nss/fft051501.htm

and escape trainer...

https://www.npdc.navy.mil/slc/nss/etf041901.htm

:rock:

Thanks for the heads up TLAM!

By the way, an Ohio class boat has 3 escape trunks...would you count 24 missile tubes?

I like the touch screens in the Virginia class trainer.

Quote:

Originally Posted by Bill Nichols

Not all masts penetrate the pressure hull.

Wouldn't there still have to be cables connecting non-penetrating masts to whatever gizmo inside the hull that's associated with it?

Quote:

Originally Posted by TopTorp '92

Excellent comments from Bill and Bubblehead Nuke above.

Quote:

Originally Posted by Bubblehead

Why thank you.

quite welcome :lol:

Quote:

Originally Posted by Bubblehead

The equalization system, if I remember correctly, was so that you could open the outer doors after flooding the tube. It was only exposed to sea pressure when the ejection pump door was open. There was not a seperate isolation for it.
As for the 2000# air used. Oh yeah, how could ANYONE forget venting the ram inboard after shooting a weapon. A 688 shooting a torp makes a VERY distictive noise transient as you pointed out to me YEARS ago.

There are tactical issues associated with the torpedo tube selection. You always shoot the target using an opposite tube. Starbard tubes are used to shoot portside targets; likewise, port tubes are used to shoot starbard targets. Studies have shown that the target is likely to fail detecting the transient associated with a tube fired on the opposite side of the ship. This has everything to do with the fact that the ships aspect exposes the operating noises for that aspect. The transient reduction alone will spell the difference between a target that alerts early and one that fails to alert at all.

Quote:

*Emergency Main Ballast Tank Blow System (EMBT.) This system has hull valves actuated from the BCP. The back-up hull valves are always open. The hull valves are normally shut.

Quote:

Originally Posted by Bubblehead

I think I need to requal!

get hot! :know:

Quote:

*The ship's whistle uses 150lb air in order to function. These hull & back-up valves are manually operated.

Quote:

Originally Posted by Bubblehead

Ok, that is an EASY one to forget.

. . . only because it was forward of the watertight door :yep:

Quote:

Originally Posted by SeaQueen

Quote:

Originally Posted by Bill Nichols

Not all masts penetrate the pressure hull.

Wouldn't there still have to be cables connecting non-penetrating masts to whatever gizmo inside the hull that's associated with it?

In a word: yes. Electrical fittings are so numerous they are not worth mentioning. There is a separate hydraulic system associated with sail components. Hydraulic system components are located inboard (AMR) while the hydraulic lines are fitted to the hull.

Quote:

Originally Posted by TopTorp '92

Quote:

Originally Posted by SeaQueen

Quote:

Originally Posted by Bill Nichols

Not all masts penetrate the pressure hull.

Wouldn't there still have to be cables connecting non-penetrating masts to whatever gizmo inside the hull that's associated with it?

EHP's (Electrical Hull Penetrations)

They are NUMEROUS, especially when talking about boats with external tubes (VLS, or flight II 688's)

Working on those can be interesting. Nothing like sitting in a ballast tank and looking through the pressure hull into the people-tank while one is being repaired. We really trust those welders, don't we?