SUBMARINE SALVAGE U.S. NAVY TRAINING FILM USS HOIST (ARS-40) SUNKEN SUBMERSIBLE 2117
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- Опубліковано 27 вер 2024
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The short U.S. Navy training film Submarine Salvage shows the process Navy salvage crews use to retrieve sunken submarines. The submarine shown being salvaged appears to be a WWII boat; the techniques shown probably would not work with a modern submarine due to the size of these vessels.
The film begins with a submarine sinking and the rescue of the ship’s survivors. Rescuing survivors is the only goal immediately following the sinking of a submarine. Once all survivors are rescued, the Navy’s next objective is salvaging the ship (02:23). Specialized equipment is used by salvage forces (02:45); however, depending on the operation, different equipment and methods are required for a successful salvage operation. Regardless of the various factors, three basic principles or steps are consistent for salvaging submarines: prepare a salvage plan, rig for lift, and execute lift. The first, prepare a salvage plan, includes evaluating the environment, choosing an appropriate lifting method, and determining the required lifting force. Officers gather information they need to formulate their salvage plan, operating out of the shipyard where the sunken submarine was built (03:41), giving them access to the engineering plans and other details of the ship. The ocean bottom is taken into account as the ocean environment is examined. Depth plays a role as to what divers can accomplish, and weather is also a factor that must be considered. Planners must also know the state of submarine, which comes from interviews with survivors and communication records from the ship. Shipyard managers assist the planners in what needs to be done to make the sub airtight, if possible. A diver is then sent down (06:24) to survey the ship and gather on-the-spot information, most importantly whether the hull is partially buried or not. This allows for planners to determine the lifting method. The different lifting methods are: patch and pump (07:41), pontooning (08:30), self-lift, and lift ship (08:55). Patch and pump is the most common, but it requires the most diver time. Pontooning is the only practical way to lift in deep waters (up to max depths of 300 feet). Lift ship is usually only performed in shallow water. Depth and time requirements determine which method should be used. Lifting force (09:57) involves taking into account displacement and mud suction to calculate the lifting force required to raise the sub. The salvage ship moves out to prepare to raise the sub (11:06). The second step is to rig the sub for lift by placing wires under the hull. Sometimes tunneling is required to accomplish this. Divers can also set wires via lancing. A chain sling (13:38) is used to cradle the sub during lift. Prior to the lift, the sub is made to accommodate as much self-lift as possible. Divers prepare by rehearsing each step and conducting every test necessary on a sister ship (15:40) so they will know exactly what to look for and do. The third step is executing the lift (16:56), which can be done by raising with pontoons, by liftship (stern lift or bellylift), or by self-lift. Pontoons are moved into the water in preparation for lift (17:08). The submarine is gradually lifted over several stages of lifting to shallower depths. Lifting ships, such as YHLCs (19:16), the Navy’s heavy lift ships, can be used to pick up a sub. This must be done in pairs, and can lift via a bellylift or a stern lift. The submarine is lifted to the surface (28:06) during the salvage operation using a pontoon lift. Though the Navy’s increase in submarines comes with an increase in accidental sinking, well-planned salvage operations make it possible to retrieve sunken submarines and minimize Navy losses.
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This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit www.PeriscopeFi...
For those interested in reading about a real sub salvage operation, the S-51 in 1925, where some of these techniques were used first, and a usable underwater torch was developed, you can read "On The Bottom" by Commander Edward Ellesberg, commander in charge of the operation. He was also briefly involved in the S-4 salvage operation. Long out of print but still findable in the internet used market.
300 ft safe dive depth in those canvas, rubber and copper suits brave men indeed
These military training and information films are always a learning experience.
thats there point.
Shop Dog and
Very cool video! Love old military stuff like this! I learned a heck of alot watchin this one thank you!
good video restoration...and the issues haven't changed since....this is why I am a Patron
Again great film . Thanks.PERISCOPE UP!
Nice job. Thanks
The USS Hoist was the home of the 1st African American Navy Diver, Carl B.
evere ones seen the movie smartass richard c
But he couldn’t swim
@@mrpaulgrimm6129 Came here for this comment.
andybaldman you try swimming in a diving suit?
Excellent !
Why not weld brackets on top of hull to lift sub straight away instead of washing mud from under sub when sub is new
My guess is that, since the outer hull is not nearly as strong as the pressure hull, it wouldn't hold the weight... That or it could compromise the pressure hull If attached to that.
Submarines sunk so infrequently back then, it was probably deemed an unimportant feature
Having salvage valves was a good idea. Another would have been permanent lifting eyes fastened to the pressure hull ribs so lifting can fasten to these negating having to pass cables/chains under the hull.
Go Navy✌️!
One of the Airport movies where a 747 sank in the ocean with people inside. they used this air balloon system to raise it and get the people off
Love the old cheesy movies, 747 pressurized under the ocean.
As far as I know, very few submariners have been rescued from a sunk submarine, due to most sinkings are too deep!
USS Squalus.
PeriscopeFilm Yep, which later during the Second World War accidentally sank a submarine that had played a huge role in in the rescue of the Squalas.
@@miked1765 Recomissioned as the Sailfish, it sank a Japanese carrier that was transporting prisoners-of-war-- survivors of a Japanese depth charging that sunk Sculpin (the boat involved in the Squalus rescue).
Hank13665 Yes, I think you are correct.
But submariners have been rescued which is important. And Submarines have been recovered. The Squalas was the first (?) that rescued 32 people due to development of the rescue bell that could attach to 'any' sub. Momsen, who developed a resuce breathing apparatus that saved many people during WW2, asked the Sub Design Bureau after WW1 to develop a resuce bell that he described the requirements. They declined and another sub, the S4, sank where they could access the sub with divers but had no means to recover the trapped sailors, they all died. After this Momsen built a prototype of a rescue bell and this was then develoed further. Squalas was it's frst use I think. I think the Russians rejected USA support to resuce their folks from the Kursk with the advanced rescue equipment that can go deeper and rescue more per trip (Deep Submergence Rescue Vehicle (DSRV). So we can now recover sailors if the sub hasn't been crushed by water pressure.
Yup. Officers and MEN! Some things should never change!
From the Surface, how do they get the Rescue bell Directly over Top of sunken subs Hatch ?? ...The sucken Sub may Not be Level....That Rescue bell better have a Good seal on the sub....
Or just have a CIA team develop a claw to lift it off the ocean floor lol
Thanks for showing that. I was a diver. I was in the last class still to have the Mark 5 still on our training syllabus! So many memories! Thanks
Love our channel? Support us on Patreon: www.patreon.com/PeriscopeFilm
@@PeriscopeFilm This guy gives you honest thanks, and you hit him up with a canned request for patronage. Classy. Would it hurt you to type something original?
I apprenticed in 1979 under two Senior Chiefs {retired} at the end of the day all the crew were enjoying a beer I was using brasso on the MKV copper collar I only dove the thing couple of times mostly I was in a Jack Brown or a KMB10 and coveralls good times as well! I still dive on jobs occasionally.
Buddy Godthrie is Mr.tambourine man!
Do any body know if pontoons are still used today? Or they are old-fashioned and replaced by some more efficient technology? And, do you probably know some newer salvage reports?!
Thanks a lot!
Strange they didn't think of lifting points built on to the Sub. Or weld them to the Sub during the rescue.
De-water the ship???
Anybody know what sub this is?
NAVY decides to make a salvage film to cover up the Screen Door debacle.
The count down sign is bother sum, and obstructs the middle lower part of the screen making it difficult to see what is being shown and talked about. It should be removed.
Here's the issue: this film and others like it may have been made by taxpayers, but the U.S. Government in its infinite wisdom, threw it away. Tens of thousands of similar films were destroyed and many others are at risk. Our company preserves these precious bits of history one film at a time. How do we afford to do that? By selling them as stock footage to documentary filmmakers and broadcasters. If we did not have a counter, we could not afford to post films like this on online, and no films would be preserved. It's that simple. So we ask you to bear with the watermark and timecodes.
So, in the past we tried many different systems including placing our timer at the bottom corner of our videos. What happened? Unscrupulous UA-cam users downloaded our vids, blew them up so the timer was not visible, and re-posted them as their own content. We had to use content control to have the videos removed and shut down these channels. It's hard enough work preserving these films and posting them, without having to deal with these kind of issues.
Get over Chuck! Just listen to the info then.
These guys at Periscope Films do us justice by providing these docs for free on YT; most likely on a shoestring budget! Support these professionals through Patreon.
Back in the day they lost subs like I lose smarties down the side of the sofa....glad losing them is now so rare.
Look at the salvage of USS Guitarro SSN-665 in May 1969
i wonder why 2/3 of subs go down in less than 300foot of water ??? is that there patrol area ?
SOUNDS ALL WET TO ME
Hello Soviet nuclear sub! Hi Glomar explorer! >crack< bye Glomar explorer!
I wonder which submarine this is? I never knew the Navy intentionally sank a submarine for salvage practice.
Could be one they sank by testing weapons.
YHLC Site: www.navsource.org/archives/14/6001.htm
my polish grandfather ( bobalink u stinkski designed the submarine screen doors
1:10 hahaah!, funny "feel good" propaganda, that rescue was.. lol.
some how when the sub sank it came to rest on the seafloor upright,
some how they attached some extendable tube to it, and got the sailors out.
that all very optimistic,...bullshit... even nowadays with all them highttech mini rescue subs it takes days and days to find and locate a sunken sub, if you do find it, the question is how much is left...
Not likely the Squalus filmed in color....
too much bla bla bla
"For Official Use Only". You mean me and 165 of my friends cant use this information privately to recover our sunken civilian submarine?
Nate Hill Hahaha! Exactly! 👍🏾
Why don't you put the numbers at the the bottom of the screen instead of 1/4 of the way off the bottom. Does not make the film enjoyable to watch.
Here's the issue: tens of thousands of films like this one were destroyed and many others are at risk. Our company preserves these precious bits of history one film at a time. How do we afford to do that? By selling them as stock footage to documentary filmmakers and broadcasters. If we did not have a counter, we could not afford to post films like this on online, and no films would be preserved. It's that simple. So we ask you to bear with the watermark and timecodes.
So, in the past we tried many different systems including placing our timer at the bottom corner of our videos. What happened? Unscrupulous UA-cam users downloaded our vids, blew them up so the timer was not visible, and re-posted them as their own content. We had to use content control to have the videos removed and shut down these channels. It's hard enough work preserving these films and posting them, without having to deal with these kind of issues.
Thank you for the work you do Periscope Films
@bobking...why don't you go produce or otherwise find, retrieve, revive, and then publicize such material yourself, then?
Interesting doc, seems old 60ish I guess. Subs now prob to heavy for this technique. The on screen counter is intrusive. Thanks for sharing.
Or....you can build a ship with an internal lifting claw to pick it up of the sea bed and name it glomar explorer.....oh wait....never mind the broke it up and scraped it.
It could be a training sub, but it could be the Sqailus (sp), a sub that sunk during tests in the 30's, I don't know though, its in color, they are using the Maumson (sp) rescue bell? she lost some crew I know, Maumson was in on that rescue himself, keep on justasinger54
The Squalus SS 192 went down off the Isle of Shoals during a test dive on 23 May 1939. There is an excellent book written back then by Nat Barrows called "Blow All Ballast" if you are fortunate enough to locate a copy. The book is the entire story of the test dive, the rescue and the salvage of the Squalus. Many excellent Blk & Wht photos of Swede Momsen and the divers, the diving bell and the salvage. Just checked and Amazon has two copies available. 4/13/19.
jethto tull AQUALUNG
Or could compressed air be pumped into both ballast tanks and sub will come to surface by its self and block any holes of escaping air
The three boats at 03:35 remind me of my old boat, the USS Wahoo (SS-565) before the three big topside sonar domes were installed and forward section was extended. I can't make out the data that is on the walkway on the center boat, though. I was a Radioman stationed aboard the Wahoo from 1977 to 1980. It was definitely a blast being submariner, especially aboard a diesel-electric boat like the Wahoo at that time. ;-)
how long would a fart last in a submaine i'd go in buddys qtrs & lay a egg
Check submarine S-51, mentioned in the video,
Thneed2003 the S-51 sank in September 1925.
How do you dock with a tilted sub?
I wonder if any of these hair-brained ideas were ever put into practice ? I mean really, how many modern day (at the time of the subject matter) sub sinkings were there ? How many were raised ? I can only think of once when lives were saved and I'm not even sure that wasn't just in a movie !!!
@snowtiger....hmmm....some degree of accuracy in what you're saying, but misadventures in military activity/technology ie failures weren't readily made public then or now. sure there were some exceptions, but for the most part, as recent books/film have pointed out, subs in the cold war era were playing deadly games of hide/seek, espionage, and covert delivery of resources. besides, these "ideas" were the foundation upon which later techniques/technologies were of course founded, and utilized. can't just sit on your hands letting "best" being the enemy of "better" or "good" as the saying goes. got to start somewhere. sub hx is fascinating for anyone who cares to delve into it. cheers...
What did they do with the bodies?
At 6:05ish notice the state of the art computer in use by the Navy Officer
I knew how to use one of those slide rules ...a long time ago
@@earlyriser8998 if you put a new “B” cell battery in them they work just fine again. 😉😷
Didn't know they had F4s in 1915?..listen to it..