"UNWATERING FLOODED COMPARTMENTS" 1950 U.S. NAVY DAMAGE CONTROL FILM 12984
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- čas přidán 10. 09. 2024
- Unwatering Flooded Compartments (MN-6774) is a short 1950 educational film on damage control from the U.S. Navy. The film briefly reviews the different types of permanently installed drainage systems on a ship and then gives a good overview of the various auxiliary portable equipment that can be used for unwatering a flooded compartment. The film opens with a shot of a Navy carrier at sea, unlevel as it is taking on water. Graphics are used to show how flooded compartments can progress, exacerbating the situation. The film then shows several types of permanently installed drainage systems (01:43), including a steam-driven pump, a motor-driven centrifugal pump, and eductor pumps (01:59). A man turns the wheel on an eductor. A sailor operates the controls of the ship’s drainage system. A hole below the water line leaks water into a ship (03:32). The film then shows the various portable equipment all grouped together (03:50), including a P-500 pump, a Handy billy pump, a portable electrical submersible pump, an eductor pump, and a bucket. Two men show the electric portable submersible pump (04:25), and then graphics are used to explain the construction of the pump and how it functions. A man connects the hose line to the pump then places it into a screened basket. Next, the film shows a fluted perforated metal strainer that can also be used for the pump. The men lower the pump and its strainer basket into the flooded compartment and then turn it on. Water is pumped out through the hose and sprayed overboard (06:41). The men pull the pump out from the flooded compartment (07:30). Next, the two men fit a hose on a gasoline-powered Handy billy pump (08:16). They prime the engine then start the pump. A P-500 (09:23) is shown next, which is similar to the Handy billy but can handle a larger capacity of water. A man hooks up the discharge hoses to the pump. The other sailor primes the pump before starting it (10:11). There is a shot of the machine’s discharge pressure regulator. On deck, men open hose nozzles and spray water overboard. The film shows an eductor jet pump next (12:14); graphics show how the device works. Two men connect hoses to the eductor, then lower it into the compartment. A Perry jet eductor pump is shown next (13:52). Graphics are again used to show the details of the design. A sailor hooks a hose up to the fire main to get required water pressure (14:58). A man operates a Perry jet pump in a display set up on a dock (15:07). Two men lower the Perry jet pump into the flooded compartment. The film concludes by reviewing the steps to contain flooding and unwatering flooded compartments.
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FYI: Unwatering is removing water from where it's never supposed to be.
Dewatering is removing water from where it is supposed to be, but you have to remove it for some reason.
60 years later i was using th same PeriJet pumps and electric submercble pump in the Aussie navy... Not broke dont fix it! 👍
There's something to be said (a great deal actually) for a piece of heavily-tested and reliable gear!
20 years later the pumps where ok. P250s where more finicky than the P500s, never saw a Billy run.
However, our OBAs (oxygen breathing apparatus)
fell apart on our faces, from dry rot.
Ca148, De1085. Cheers Chris
Watched this in the sea scouts about '67-68. Bet a lot of this stuff is still current. I just Tripped over this.
Very interesting! I have some knowledge of portable water pumps from being a recreational goldminer. I’ve been a club menber since 2007 and have rigged up several home made systems for underwater dredging. I have always wanted to get my hands on a surplus navy pump that I heard about, (probably the P-500 mentioned) it was manufactured by OMC or Evinrude. It’s been said that its engine is a modified outboard motor. Engine. Great stuff, this!
Funny. My father called it "dewatering" and he served in the 50s. I served in the 80s and it was also called "dewatering." I also learned the Handy Billy and the P250.
Thank for your service sir.
I've only heard of dewatering in mining. Unwatering maybe specific to offshores
I'm in now. I'm not a deck rate or anything but I believe it's still called dewatering.
Its still called dewatering
I took a slide rule class in college. Still have an aluminum and a bamboo slide rules along with the book.
Bamboo slide rules were supposed to be more accurate because of less expansion and contraction.
Would be cool to see just how well this is implemented in trying to raise a sunken ship in shallow water like they did back in WW2 at Pearl Harbor. Also a fire suppression video would be nice to see as well.
Here you go Blue Jacket. czcams.com/video/QhVC-xvr2Vg/video.html Enjoy. czcams.com/video/iplSc0TCcvA/video.html and czcams.com/video/zLyBO_7Xbqk/video.html I know I am getting a bit carried away. :)
I was hoping to see methods of stopping water intrusion as well.
Why are you trying to claim copyright on a public domain film? As a work of the US government, this is NOT copyrightable.
Sometimes organizations focused on preserving things may copyright a work explicitly to prevent it's misuse by other malicious organizations. PeriscopeFilms intends to make all this available for free for all of us to view, another organization may opt to purchase copyrights on these works and then seal them or destroy them for whatever vendetta reason they have and sue anyone trying to make this viewable for free. It sadly has happened in some cases where even if the original copyright owner or creator has long passed, the estate that inherited the works keeps them locked up or alters them deliberately because of the tastes and demands of the new estate and nothing can be done about that. Think of it like a museum buying ancient statues so everyone can view them VS a private collector buying a statue to put in his own garden and then cutting off the genitals because he doesn't want to see anything lewd in his garden.... Yes....people do that even to this day.
I was the DCPO on my last ship. It's called dewatreing the compartment!
"Flooded compartments have sunk ships" Well duuuhhh!
Oh really do you think !!😀😀😀😀😀😀😀😀😀😀
My first instructor was Philippino.
P2pipty pump! Always remembered that. Great guy just sounded funny.
Awe puk you....
Note: proper doning of dogfood bowls.
4.0
I worked with a Philippino electrician. He told me, "Go to the tool room and get the Coleslaw!" "Closlaw?That guy's crazy I said!" " It took me a week to figure out that he wanted a "Hole Saw"!
Since unwater and dewater have been commented upon a few times here's a little history of words.
Do you dedo an error or undo a mistake? :)
Un- is the modern spelling and pronunciation of the Old English on- prefix. It has been used in English as a privative (meaning it reverses the meaning of the word to which it is attached) for over 1000 years.
De- comes from the Latin where it was, amongst other things, also a privative functioning like un-. De- was imported into English via French which itself was derived from Latin.
So, we undo a mistake because do and un- both evolved from Old English and, being so useful and common and simple, they haven't changed much. (Mistake is itself from Old Norse but that's still a Germanic language like Old English, and take comes Old English so it works here.)
However, we could de-effect an error. (Effect and error are from Latin, with the 'fect' part meaning to make or to do. I don't know if anyone uses de-effect commonly. We do use defect for something lacking or made poorly. Curiously, we also use unaffected where un- is from Old English yet affect is from similar Latin roots to effect, so it's a hybrid.)
Since water comes from Old English, unwater is a perfectly sensible, and arguably the more correct, term.
I think confusion arises because nowadays some people appear to have the idea that, especially where the sane word can be prefixed by un- and de-, un- means without, and de- means had a change made/had a property reversed.
For example, some people might say an unwatermarked video is a video that has no watermark in it, regardless of whether it was made without a watermark or it it had one removed.
(Compare this with unwater-marked paper. Unwater-marked paper is paper that is made without a water-mark, not paper that has had a water-mark removed.)
A dewatermarked video is explicitly one that had a watermark but that mark was removed. An unwatermarked video might be a watermarked video that was dewatermarked. This is is probably easier to understand than: an unwatermarked video is a watermarked video that has been unwatermarked (using unwatermarked in two different but correct ways) .
A water pump that works on water pressure. Great idea
9:34 "4 banger 2 stroke"
wow..... ive got a 900cc, 3 cylinder, 2 smoker in my jet ski..... and it sounds MEAN and hauls ass
a 4 cylinder must sound crazy!
Love that PeriJet 😎
I laughed out loud when he let the venturi thing slurp up a rag and then what looked like a dang wooden board
I work in hydroelectric powerhouses and we "dewater" regularly...
4:09 - the old faithful buckets 😅
Shouldn't it be DE-watering, rather than UN-watering?
It is to be said that induction pumps, while clever are quite ingenious, are so counter intuitive at first glance.
"So we're going to get water OUT of a space where we don't want water by pumping water INTO said space?"
Guys we're taking on water pretty fast. I looked up this video, I'll let you know how we go
"Condition Yoke is No Joke"!
Im glad I know this now but not my scales
Wut just hit the r key, fixes all problems If not on cooldown
"Unwatering" - is that the same as "drying"?
Huh, I thought that at some point they would close all doors to a flooded compartment and pump in pressurized air to push the water out through the same hole it came in.
Морская Академия - наш первый родной порт
✔️
Running a gas motor indoors may cause toxic gas buildup... This is almost as obvious as flooding may sink a ship. If you have to explain this... Do not leave that sailor untended.
First time I ever heard the term "un water"
(Even my spell checker didn't like it!)
I see drips constantly running down this video. It needs dewatering!
Unwatering????? Has this been translated from some other language? Certainly not English!
Translated from US Navy.
My thoughts exactly. It was called "dewatering" when I went through DC training in the 80s.
It is a US Navy film... Why would it be translated?
Language constantly changed. People will laugh about your english 80 years from now.
Unwatering is unaccurate, after passing Grade 6.
Unwatering is technically accurate not inaccurate.
De-Watering !