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-   -   U-boat torpedo almost hits tanker 63 years after fired at the HMS Royal Oak! (https://www.subsim.com/radioroom/showthread.php?t=156679)

SteamWake 09-28-09 02:33 PM

Quote:

Originally Posted by Cohaagen (Post 1180272)
Good call, but as I remember the Imperial Fleet had to disarm their weapons before handing themselves over under the terms of the Armistice. Their batteries had essential components removed from their breeches, etc., and were inspected after arriving at Scapa. The scuttled fleet was almost totally salvaged in the 20s and 30s, I can't imagine them missing something like that.

It must be one of Prien's. It's either that, or an RN practice torpedo in an area they never practised in.

Catch it ! CATCH I ! .... kerplunk... :oops:

Ummm errr okay we have 9 torpedos instead of 10 got it ;)

FIREWALL 09-28-09 02:38 PM

:roll:With it destroyed we'll never know. Thx Experts. :roll:

SteamWake 09-28-09 02:42 PM

Quote:

Originally Posted by FIREWALL (Post 1180278)
:roll:With it destroyed we'll never know. Thx Experts. :roll:

After 30 years immersed in the ocean you would have a tough time finding out anyhow. Any identifying marks are long gone and the whole thing was probably encrusted with barnicales and such.

Kind of supprissing it would float after all that.

Wonder if the warhead is still stuck in the mud. :06:

Jimbuna 09-28-09 03:24 PM

Quote:

Originally Posted by SteamWake (Post 1180284)
After 30 years immersed in the ocean you would have a tough time finding out anyhow. Any identifying marks are long gone and the whole thing was probably encrusted with barnicales and such.

Kind of supprissing it would float after all that.

Wonder if the warhead is still stuck in the mud. :06:

I really can't imagine them going to the bother of searching for it.....in these days of budget cuts :nope:

Freiwillige 09-28-09 03:43 PM

Actually it is quite easy to tell what kind of torpedo it is. Its propeller, tailfin, diameter and any paint. All countries used their own torpedo designs and all were different. Different lengths, different weight.

It was taken to Scapa pier 9 before being towed off for destruction so I am sure the "Experts" got a look at it before deciding that boom at sea is better than boom on shore.

Also if you look at www.u47.org you can see that a few German torpedo's Prien fired were misses and duds and I can assure you that those were the only German WWII torps fired in scapa Flow

Letum 09-28-09 03:54 PM

Good shot Prien!
Don't let the near miss bother you.

SteamWake 09-28-09 03:55 PM

Quote:

Originally Posted by Freiwillige (Post 1180339)
Actually it is quite easy to tell what kind of torpedo it is. Its propeller, tailfin, diameter and any paint. All countries used their own torpedo designs and all were different. Different lengths, different weight.

It was taken to Scapa pier 9 before being towed off for destruction so I am sure the "Experts" got a look at it before deciding that boom at sea is better than boom on shore.

Also if you look at www.u47.org you can see that a few German torpedo's Prien fired were misses and duds and I can assure you that those were the only German WWII torps fired in scapa Flow

Thing is propellor and tailfns were probably a big chunk of barnicale, coral, kelp and the like. If the tailfins were still attached at all.

Hey heres a question. Did these torpedoes use bronze probellors?

The bronze would have held up quite well I would think.

Jimbuna 09-28-09 03:58 PM

Quote:

Originally Posted by SteamWake (Post 1180351)
Thing is propellor and tailfns were probably a big chunk of barnicale, coral, kelp and the like. If the tailfins were still attached at all.

Hey heres a question. Did these torpedoes use bronze probellors?

The bronze would have held up quite well I would think.

I doubt it...but the propellors may have been bronze and may have held up quite well :O:

j/k...sorry, couldn't resist :up:

FIREWALL 09-28-09 04:00 PM

On second thought, I can see why the brit RN would want to quickly blow it up and let the news die.

Jimbuna 09-28-09 04:04 PM

Quote:

Originally Posted by FIREWALL (Post 1180357)
On second thought, I can see why the brit RN would want to quickly blow it up and let the news die.

I honestly don't think that would be the case.....tis common knowledge who prevailed in the end.

I think this decision was taken in good faith after considering the safety of locals in the vicinity and the possibility of a mishap then the ensuing criticism for not dealing with a potentially hazardous situation effectively.

FIREWALL 09-28-09 04:06 PM

Nuclear weapons have been recovered with less concern.

SteamWake 09-28-09 04:56 PM

Quote:

Originally Posted by FIREWALL (Post 1180364)
Nuclear weapons have been recovered with less concern.

Yea but they dont have a wet steam generator waiting to pop off.

Wait a minute... if this was a torpedo fired in action, what led them to believe it still had a propellent charge in it?

I mean wouldent it have spent its propellent already?

Arclight 09-28-09 06:08 PM

Ehr, wasn't Prien carrying only electric torpedoes?

And am I the only one thinking the thing surfaced because the warhead separated? :doh:

SteamWake 09-28-09 08:01 PM

Quote:

Originally Posted by Arclight (Post 1180438)
Ehr, wasn't Prien carrying only electric torpedoes?

And am I the only one thinking the thing surfaced because the warhead separated? :doh:

The article stated that the device was destroyed as it still contained 'compressed gas' :shifty:

Arclight 09-28-09 08:23 PM

So? :-?

I'm claiming they're wrong since Prien only carried electric torpedoes.

UnderseaLcpl 09-28-09 09:13 PM

I'm concerned about where you got the information that Prien carried only electrics on that mission, Arclight. I could probably look it up myself, but it would be easier if you would be so gracious as to tell me. I don't doubt your idea, but I'd like to check your references and verify your claim for myself.

Honestly, I'm a little surprised that the torpedo (electric or gas) would surface at all. IIRC, the gas torpedoes suffered from a leak in the pressure chamber that caused them to run too deep, and one can only assume that such a leak would be exacerbated by so many years of exposure to salt water and pressure. Electric torpedoes are (I would assume), less buoyant, by virtue of the weight and size of their lead-acid batteries.

I really don't know what to make of it.

Arclight 09-28-09 09:56 PM

Actually, the site about U-47 linked earlier in this thread mentiones as much:
Quote:

Adorned with a makeshift conning tower emblem mocking the British Prime Minister Neville Chamberlain and armed with a full complement of the new G7e electric wakeless torpedoes, U-47 gently moved out from its base at Kiel on 8 October. Prien took a carefully-considered route to the Orkneys - lying on the bottom during daytime and keeping radio silence. The mission had been planned with the highest level of security, to the point where Dönitz had transmitted the details to Raeder by word of mouth, and by 4 October all other U-boats operating around the Orkneys had been withdrawn from the area. As Prien and his crew slowly made their way towards their target, it is highly likely those in the higher German chain of command were oblivious to the monumental task that had been set in motion.
http://www.u47.org/english/u47_sca.asp

* U-boat.net seems to back it up:
Quote:

12:58...Impact firing. The boat lurched as one, two, three ton-and-a-half G7e torpedoes went overboard on blasts of compressed air, electric motors winding up, accelerating toward 30 knots. U-47’s hydrophone operator called, "Torpedoes on their way."
http://www.uboat.net/ops/scapa_flow.htm

UnderseaLcpl 09-28-09 11:14 PM

Thanks, Arclight. I assume that U-boat.net has pretty solid info regarding whether or not Prien carried only electrics on his boat, given the nature of most of the info I find there, so I trust your citations. Furthermore, I don't think that an electric torpedo battery or motor relay would survive for that long in those kinds of conditions.

I don't know either way, but something seems odd about one of Prien's torpedoes surfacing after all this time. I'll need to look into it some more and do some reading on annual natural sediment deposits/removal in Scapa Flow before I can really form an opinion, but this whole idea seems odd to me.

Thanks again for the info. :salute:

Arclight 09-28-09 11:49 PM

Aye, no problem. And I agree that for what seemed a relatively straight forward (though remarkable) story at first, something seems off the more you think about it. :hmmm:

Some similar stories here. I'm starting to think it was either a British or German wet-heater. Beats me how it got there though. At any rate, I really doubt it was one of the torpedoes that was fired by, and failed on, Günther Prien. :-?

* Another tidbit:
Quote:

Kaplt. Prien was specially chosen as suitable to carry out the operation, personally briefed by Dönitz, and given carte blanche in the matter of tactical procedure. The attack was to be made if possible on the night of 13th/14th October, as on this date both low tides occurred during the hours of darkness, and it was new moon at this period. Dönitz states that U-47 was to carry torpedoes (“G.7 e”) only, it being decided to use torpedoes instead of mines, as by this means, in case of a hit, there was a greater likelihood of achieving a successful result.
http://www.uboatarchive.net/U-47RoyalOak.htm

Wolfehunter 09-29-09 06:42 AM

Quote:

Originally Posted by Rhodes (Post 1179944)
:oTalk about german engineering!

:o No kidding.. :salute:


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