# Is there a halfway-possible way for a warship to be salvagable, 30 years after sinking? **URL:** \ **Category:** Factual Questions\ **Created:** [April 23, 2014, 5:25am UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747 "2014-04-23T05:25:31Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![Ranger\_Jeff](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/ranger_jeff/32/2065_2.png) [@Ranger\_Jeff](https://boards.straightdope.com/u/Ranger_Jeff)\ **Post date:** [April 23, 2014, 7:24pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/21 "2014-04-23T19:24:36Z")
Wasn’t one of Clive Cussler’s first books “Raise The Titanic”? ---
**Author:** ![TokyoBayer](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/tokyobayer/32/13989_2.png) [@TokyoBayer](https://boards.straightdope.com/u/TokyoBayer)\ **Post date:** [April 23, 2014, 7:48pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/22 "2014-04-23T19:48:44Z")
Interesting question. [A quick look](http://www.uboat.net/articles/92.html) shows that after the war when the German fleet was divided by the three powers, that the British pushed for, and got special treatment for the U-boats. > [@](#): > > 1. On the same day, 18 July, Churchill had lunch with Truman, and the former’s note of their conversation records that: I’ve found [some references](http://www.secretscotland.org.uk/index.php/Secrets/OperationDeadlight)to the salvage rights being awarded back in 1997, but nothing seems to have come from it. > [@](#): > > A plan is being finalized to raise the first of 116 German U-boats scuttled more than 50 years ago off the northwest coast of Ireland, British company Masters Marine Salvage (MMS) which as been granted salvage rights to the submarine graveyard said here Sunday. Commander Mark MacIntyre, managing director of MMS, said they hoped to begin work off County Donegal in mid-May in what will be the biggest salvage operation of its kind in the world in terms of volume. The company had planned to move on site during last year’s summer “weather window” but only managed to survey the dive sites which stretch for about 150 miles northwest of Malin Head almost to the edge of the Continental Shelf. The submarines are at depths of 50to 200 metres (150 to 600 feet). The British-Irish Inter-Parliamentary body has sought safety guarantees from the salvagers. A subcommittee report said there was no evidence that the raising of the U-boats would be a danger to the public. The company’s team will largely be ex-British navy divers and they will be attempting to reverse the work of colleagues who scuttled the U-boats 52 years ago. They estimate the hulks will each contain recoverable metals. There is also a plan to preserve some of the most famous submarines for museums. About 100 of the submarines may be salvageable and the work may take up to eight years. The North Atlantic U-boat fleet surrendered to the allies and were assembled in Lough Foyle between Donegal and LondonDerry. They were sunk in “Operation Deadlight” in December, 1945. The original plan had been to town them out to the deep water Rockall Trench and scuttle them there. Bad weather disrupted the operation and many parted their tows and were sunk by gunfire rather than opening the seacocks and sinking them. Maybe the initial objection was because of the specific agreement that they were to be sunk and not salvaged, but then it was resolved? Donno. ---
**Author:** ![Mk\_VII](https://avatars.discourse-cdn.com/v4/letter/m/5f9b8f/32.png) [@Mk\_VII](https://boards.straightdope.com/u/Mk_VII)\ **Post date:** [April 23, 2014, 7:54pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/23 "2014-04-23T19:54:32Z")
It was. Of the movie version, the producer Lew Grade commented, “It would have been cheaper to lower the Atlantic”. ---
**Author:** ![engineer\_comp\_geek](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/engineer_comp_geek/32/504_2.png) [@engineer\_comp\_geek](https://boards.straightdope.com/u/engineer_comp_geek)\ **Post date:** [April 23, 2014, 8:03pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/24 "2014-04-23T20:03:31Z")
> [@Ranger\_Jeff](#): > > Wasn’t one of Clive Cussler’s first books “Raise The Titanic”? Yeah, I remember reading it way back when. IIRC, the book had them patching the holes in the ship while it was still on the bottom then raising the ship with inflatable air bags. I remember thinking that it was all a bit unrealistic when I read it, and that was long before they had found the Titanic and proved that it had split apart during its sinking. Back then a lot of folks believed that the ship was probably sitting on the sea floor basically intact. ---
**Author:** ![dstarfire](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/dstarfire/32/5762_2.png) [@dstarfire](https://boards.straightdope.com/u/dstarfire)\ **Post date:** [April 23, 2014, 8:17pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/25 "2014-04-23T20:17:35Z")
How about one that got frozen into an iceberg, ala Avatar: The Last Airbender? A ship getting trapped in ice is quite plausible. (happened to MV Paul R Tregurtha in the documentary series ‘Mighty Ships’ ). Other ideas: scuttled after it got trapped in a harbor by a mudslide sealing off the harbor’s mouth. ---
**Author:** ![Blakeyrat](https://avatars.discourse-cdn.com/v4/letter/b/ecd19e/32.png) [@Blakeyrat](https://boards.straightdope.com/u/Blakeyrat)\ **Post date:** [April 23, 2014, 8:39pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/26 "2014-04-23T20:39:40Z")
> [@bordelond](#): > > Ninja’d on the _Space Battleship Yamato/Star Blazers_ reference 🆒 Also the Bebop from _Cowboy Bebop_ was a converted fishing trawler, although it probably never sunk before the conversion. EDIT: Oops, looked it up, it was actually original a \*space \*fishing trawler, so not relevant to the discussion, sorry. ---
**Author:** ![zoid](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/zoid/32/336_2.png) [@zoid](https://boards.straightdope.com/u/zoid)\ **Post date:** [April 23, 2014, 9:10pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/27 "2014-04-23T21:10:05Z")
> [@Great\_Antibob](#): > > Not entirely germane to the discussion, except in the fictional sense, but this is similar to the idea in the anime [Space Battleship Yamato](http://en.wikipedia.org/wiki/Space_Battleship_Yamato). The trick they pulled there was an alien attack which dried up all the oceans, exposing the centuries old hulk to be salvaged and refitted for space duty (!). I remember getting up at 6:00 am to watch that in the 80’s. Good times 😃 ---
**Author:** ![the\_diego](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@the\_diego](https://boards.straightdope.com/u/the_diego)\ **Post date:** [April 24, 2014, 5:49am UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/28 "2014-04-24T05:49:34Z")
> [@wevets](#): > > Deep sea water is actually [slightly alkaline](http://3.bp.blogspot.com/-VKjZhxJ_ZLw/UFBal_a6TrI/AAAAAAAAAAU/H1xMmlC06Pw/s640/pH-TCO2.png): pH in the ocean varies, but is usually between 7.2 and 8.2, with the very deep waters varying around 7.5-8.0. > > But you are correct that it is a highly corrosive environment, though. Salt for steel & other iron-bearing metals to survive well, especially in the realm of 30 years. Some folks have mentioned anoxic environments, which might be the best hope of survival for a steel ship - you can’t rust all that iron in the steel without oxygen. My mistake. All I meant was, along with the colder temp which keeps calcite from precipitating, there is also more dissolved CO2, which means there is more carbonic acid to also keep calcite from being deposited. ---
**Author:** ![Princhester](https://avatars.discourse-cdn.com/v4/letter/p/3e96dc/32.png) [@Princhester](https://boards.straightdope.com/u/Princhester)\ **Post date:** [April 24, 2014, 6:23am UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/29 "2014-04-24T06:23:55Z")
> [@wevets](#): > > Some folks have mentioned anoxic environments, which might be the best hope of survival for a steel ship - you can’t rust all that iron in the steel without oxygen. I"m not so sure about that. I’m not sure if this [link will work](http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=2&cad=rja&uact=8&ved=0CDEQFjAB&url=http%3A%2F%2Fslider-chemistry-12.wikispaces.com%2Ffile%2Fview%2Fshipwrecks%2520-%2520corrosion%2520at%2520depths.pptx%2F250758352%2Fshipwrecks%2520-%2520corrosion%2520at%2520depths.pptx&ei=Aq1YU6XuBMPekgW99IBQ&usg=AFQjCNGu4wG3DvihercT7qugndmwa7fBfw&sig2=QXol7CnbP-6ejDVxaJlwYw&bvm=bv.65397613,d.dGI) but it’s to a powerpoint concerning damage to steel at depths due to electrolysis and the work of anaerobic bacteria. ---
**Author:** ![Amateur\_Barbarian](https://avatars.discourse-cdn.com/v4/letter/a/59ef9b/32.png) [@Amateur\_Barbarian](https://boards.straightdope.com/u/Amateur_Barbarian)\ **Post date:** [April 24, 2014, 12:23pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/30 "2014-04-24T12:23:49Z")
Well, in a fictional setting, I’d say Clive Cussler™ has pretty much exhausted the bizarre ways a ship can be lost, sunk or vanish and be “salvaged.” _Raise the Titanic_ is actually one of his better Dirk Pitt® books, but it’s now a silly historical oddity. (A monument to the wing of Titanists who chose all the wrong options from the panoply of eyewitness accounts - mostly that the ship went down in one piece, despite a plenitude of witnesses who saw and heard it break up.) It’s a very minor example, but one of the Travis McGee novels begins with a detailed side-story about raising wrecks with flotation foam. _Turquoise Lament_, I think. Might want to read the first chapter or two for notions. ---
**Author:** ![Claverhouse](https://avatars.discourse-cdn.com/v4/letter/c/13edae/32.png) [@Claverhouse](https://boards.straightdope.com/u/Claverhouse)\ **Post date:** [April 24, 2014, 12:48pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/31 "2014-04-24T12:48:48Z")
> [@davida03801](#): > > The interesting part to me is the idea of how you would possibly raise a warship from the depths of the sea, rather than a harbor? It’s a novel (or so I thought reading the OP) so money is no object. Just how to get done ? Balloons, lots and lots of balloons. ---
**Author:** ![Fear\_Itself](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/fear_itself/32/19637_2.png) [@Fear\_Itself](https://boards.straightdope.com/u/Fear_Itself)\ **Post date:** [April 24, 2014, 1:40pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/32 "2014-04-24T13:40:26Z")
> [@Ranchoth](#): > > My question: Is there any farfetched, utterly implausible, yet not physically impossible way I could do this, short of having the ship gently come to rest in a giant puddle of latex held in place by pixie fairies? Any kind of weird natural geological, hydrological, or chemical process that would make it at least halfway plausible? Highly unlikely. It is estimated that [Titanic hit the ocean floor between 25 and 40 miles an hour](http://www.bbc.com/news/uk-17511820), buckling the entire structure. No way a battleship could survive such an impact without major structural damage. It would never float again. ---
**Author:** ![Snnipe\_70E](https://avatars.discourse-cdn.com/v4/letter/s/b5a626/32.png) [@Snnipe\_70E](https://boards.straightdope.com/u/Snnipe_70E)\ **Post date:** [April 24, 2014, 1:57pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/33 "2014-04-24T13:57:45Z")
If the hull could survive, which I doubt. The equipment would be useless. The boilers would have to be replaced, the turbines would too much corrosion so they would have to be replaced. The complete electrical system would need replacing. Because of the amount of dissimilar metal used in a ship cells would be set up through out the machinery spaces. ---
**Author:** ![wevets](https://avatars.discourse-cdn.com/v4/letter/w/e9a140/32.png) [@wevets](https://boards.straightdope.com/u/wevets)\ **Post date:** [April 24, 2014, 2:33pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/34 "2014-04-24T14:33:48Z")
> [@Princhester](#): > > I"m not so sure about that. I’m not sure if this [link will work](http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=2&cad=rja&uact=8&ved=0CDEQFjAB&url=http%3A%2F%2Fslider-chemistry-12.wikispaces.com%2Ffile%2Fview%2Fshipwrecks%2520-%2520corrosion%2520at%2520depths.pptx%2F250758352%2Fshipwrecks%2520-%2520corrosion%2520at%2520depths.pptx&ei=Aq1YU6XuBMPekgW99IBQ&usg=AFQjCNGu4wG3DvihercT7qugndmwa7fBfw&sig2=QXol7CnbP-6ejDVxaJlwYw&bvm=bv.65397613,d.dGI) but it’s to a powerpoint concerning damage to steel at depths due to electrolysis and the work of anaerobic bacteria. I got the powerpoint to download, but it seems to be just discussing mechanisms of corrosion in the deep sea. I can’t find anything in it about comparing rates of corrosion in anoxic zones vs. oxygenated zones. Slide 12 seems to hint that increasing oxygen concentrations from wood decomposition _increased_ the rate of corrosion, which would support the idea that anoxic zones would have lower rates of corrosion, but it doesn’t seem to examine that question directly. I did find a paper which describes experimental placement of metal and wood arrays near shipwrecks in the Black Sea, which has some of the largest deep-water anoxic zones in the world. ([Archaeological oceanography and environmental characterization of shipwrecks in the Black Sea](http://specialpapers.gsapubs.org/content/473/179.full.pdf) from 2011) but it doesn’t contain the results of that experiment. (frustratingly!) ---
**Author:** ![nevadaexile](https://avatars.discourse-cdn.com/v4/letter/n/eb8c5e/32.png) [@nevadaexile](https://boards.straightdope.com/u/nevadaexile)\ **Post date:** [April 24, 2014, 2:52pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/35 "2014-04-24T14:52:58Z")
> [@Ranchoth](#): > > It’s for a germ of a story—I want to take an [Iowa class](http://en.wikipedia.org/wiki/Iowa-class_battleship) warship, sunk somewhere in the Atlantic, somehow raised and restored to operation about 30 years after being sunk. Without, y’know, just being a pile of rusty snot. > > My question: Is there any farfetched, utterly implausible, yet not physically impossible way I could do this, short of having the ship gently come to rest in a giant puddle of latex held in place by pixie fairies? Any kind of weird natural geological, hydrological, or chemical process that would make it at least halfway plausible? > > The story’s a long ways off, and the tone of the thing is such that I could handwave away an explanation—but still, I’d like to check to see if I could at least pay \*lip service \*to an explanation that kinda _sounds_ like it’d work. I’m silly that way. > > Anyone want to (a)weigh in? As someone stated earlier there were only 4 Iowa class battleships ever constructed and all are intact and are being used as floating museums. There 6 commissioned , but plans for two were scrapped as WWII had ended and the need for the _ **Kentucky** _ and the _ **Illinois** _ was rendered irrelevant. Even if we proposed that a _South Dakota_ class or a _North Carolina_ class battlewagon ( the next steps down) could have been have been salvaged had they been lost ( they weren’t) the technology didn’t exist 30 years after they would have been lost (circa 1971-1975) to do so. The technology now, 4+ years later doesn’t even exist to raise more than a tiny fraction of the hull. Frankly, other than salvaging nuclear weapons, some type of lost treasure or medical supplies (a la the morphine which is the plot of the 1970s novel and eponymous film _ **The Deep** _) trying to salvage a ship after more than a few years under saltwater would be a costly and fruitless exercise. ---
**Author:** ![Ranchoth](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/ranchoth/32/1066_2.png) [@Ranchoth](https://boards.straightdope.com/u/Ranchoth)\ **Post date:** [April 24, 2014, 11:16pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/36 "2014-04-24T23:16:09Z")
Er…for the record, yes, I’m aware that no _Iowa_ class was ever lost at sea. If the OP was a bit muddled on that point, the event—both the sinking, and the _year_ of sinking—is purely hypothetical. As a matter of fact, the scenario I’d envisioned around 1985. Though a sudden thought occurs to me: is there anything you could do _to_ the wreck, shortly after it sank, to help preserve it? Aside from (or in addition to) it sinking in an anoxic basin—and possibly miraculously landing on a colossal sea-marshmallow colony to break it’s fall. (Okay, maybe forget that last bit. 😉 ) ---
**Author:** ![nevadaexile](https://avatars.discourse-cdn.com/v4/letter/n/eb8c5e/32.png) [@nevadaexile](https://boards.straightdope.com/u/nevadaexile)\ **Post date:** [April 25, 2014, 4:10am UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/37 "2014-04-25T04:10:29Z")
> [@Ranchoth](#): > > Er…for the record, yes, I’m aware that no _Iowa_ class was ever lost at sea. If the OP was a bit muddled on that point, the event—both the sinking, and the _year_ of sinking—is purely hypothetical. As a matter of fact, the scenario I’d envisioned around 1985. > > Though a sudden thought occurs to me: is there anything you could do _to_ the wreck, shortly after it sank, to help preserve it? Aside from (or in addition to) it sinking in an anoxic basin—and possibly miraculously landing on a colossal sea-marshmallow colony to break it’s fall. (Okay, maybe forget that last bit. 😉 ) Probably not as the vessel would have sunk for a reason for a reason. Most of the naval vessels which have been lost in the 20th century were lost to: [ol] [li]Torpedoes[/li][li]Aerial bombardment/Kamikaze attack[/li][li]Naval mines[/li][li]Naval gunfire[/li][li]Accidental collisions[/li][li]Secondary explosions caused by one of the above.[/li][li]Intentional scuttling/Used for target practice[/li][/ol] A rare exception were the three destroyers lost during [Typhoon Cobra](http://en.wikipedia.org/wiki/Typhoon_Cobra_(1944)) ( they capsized and sank). The Japanese had a similar incident in [1935](http://en.wikipedia.org/wiki/4th_Fleet_(Imperial_Japanese_Navy)#The_Fourth_Fleet_Incident); but we are only talking about US naval vessels. My point is this: All of the ships which sank did so because they experience severe damage to their hulls, in some cases complete destruction when their weapons magazines exploded. While it’s possible that they could be salvaged, almost none would intact enough to be rebuilt or reused again. ---
**Author:** ![Ranchoth](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/ranchoth/32/1066_2.png) [@Ranchoth](https://boards.straightdope.com/u/Ranchoth)\ **Post date:** [April 25, 2014, 11:25am UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/38 "2014-04-25T11:25:13Z")
> [@nevadaexile](#): > > Probably not as the vessel would have sunk for a reason for a reason. > > Most of the naval vessels which have been lost in the 20th century were lost to: > > [ol] > [li]Torpedoes[/li][li]Aerial bombardment/Kamikaze attack[/li][li]Naval mines[/li][li]Naval gunfire[/li][li]Accidental collisions[/li][li]Secondary explosions caused by one of the above.[/li][li]Intentional scuttling/Used for target practice[/li][/ol] > > A rare exception were the three destroyers lost during [Typhoon Cobra](http://en.wikipedia.org/wiki/Typhoon_Cobra_(1944)) ( they capsized and sank). The Japanese had a similar incident in [1935](http://en.wikipedia.org/wiki/4th_Fleet_(Imperial_Japanese_Navy)#The_Fourth_Fleet_Incident); but we are only talking about US naval vessels. > > My point is this: All of the ships which sank did so because they experience severe damage to their hulls, in some cases complete destruction when their weapons magazines exploded. While it’s possible that they could be salvaged, almost none would intact enough to be rebuilt or reused again. Ah, thank you for your _attentiveness_…though I actually _am_ aware of the various ways in which a ship _might_ sink, though that wasn’t actually my _question_—nor was it _why_ someone might hypothetically want to artificially protect a wreck from seawater corrosion after the fact; _how_ the wreck might later be raised; whether it would remotely make any technical, economic, or military sense _to_ raise it; _or_ how the hypothetical ship would avoid the (likely inevitable) structural damage from an attack that sank it, or the collision with the seafloor. In fact, I _did_ say I was leaving aside that last (admittedly important!) part of the problem for the moment, if a bit facetiously. My apologies. 😉 And, as always, thank you, everyone, for the input! An informative pleasure, as always. ---
**Author:** ![Kiber](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kiber/32/317_2.png) [@Kiber](https://boards.straightdope.com/u/Kiber)\ **Post date:** [April 25, 2014, 2:39pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/39 "2014-04-25T14:39:07Z")
As long as we’re drifting (sinking?) into hypothetical territory - how about electricity? Since an electric current _can_ prevent rust - what about a scenario where the ship comes to rest in such a way that an electric current is passing through it? Perhaps it comes to rest on an undersea power cable - severing the line but maintaining current flow through the ship itself? Far fetched? Sure. But at least there might be a hint of plausibility? ---
**Author:** ![NagaSadow](https://avatars.discourse-cdn.com/v4/letter/n/58956e/32.png) [@NagaSadow](https://boards.straightdope.com/u/NagaSadow)\ **Post date:** [April 25, 2014, 6:16pm UTC](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747/40 "2014-04-25T18:16:37Z")
Hello! Not a battleship but German submarine [Wilhelm Bauer (former U-2540)](http://en.wikipedia.org/wiki/German_submarine_Wilhelm_Bauer) was sunk in 1945, raised in 1957 and put back into service in 1960. [Previous page](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747.md?page=1) [Next page](https://boards.straightdope.com/t/is-there-a-halfway-possible-way-for-a-warship-to-be-salvagable-30-years-after-sinking/686747.md?page=3)