How did DDs know they got a Submarine?

Packerton · 05-31-07, 03:12 PM

Like Really would they just chase after it until they were outta DCs or something?

Would they keep Depth chargeing a Neutralized sub?

EDIT: Sorry Title should of been "Killed" a Submarine

Crimguy · 05-31-07, 03:29 PM

IRL the following would happen:

They'd look and listen for signs of a kill. Debris is the most obvious symptom. There was a sub, for example, that was sank in March '42 off the coast of the US. The DD crew found a human heart and lungs (!). Clothing, wood, and supplies/provisions might float to the surface. An extremely large oil slick is another symptom (don't remember if diesel leaves an oil slick).

Sometimes the passive sonar operator would hear the crushing noises on their gear.

Sometimes there would be no symptoms. On many occasions, the uboat got "lucky" because the DD erroneously thought he got a kill and took off.

Much of what happened involved a decent amount of guesswork. On the flip side, the uboat skippers were wrong to the tune of about 40-50% as to how much tonnage they sunk. Frequently, the tanker they thought was going down got the fires under control and limped back to port.

Packerton · 05-31-07, 05:17 PM

Thanks, very good info.

Ugh I would lose my stomach if i saw a human heart or innards float up.

Puster Bill · 05-31-07, 06:00 PM

Quote:

Originally Posted by Packerton

Thanks, very good info.

Ugh I would lose my stomach if i saw a human heart or innards float up.

Better that than your heart and lungs...

Steel_Tomb · 05-31-07, 06:53 PM

Lol, I think we could all agree with that. Begs the question though, what happened to the rest of the poor bloke

. I could understand perhaps a limb or two, but internal organs? Explosive decompression or something like that maybe?

DrMilton · 05-31-07, 08:52 PM

Quote:

Originally Posted by Steel_Tomb

Lol, I think we could all agree with that. Begs the question though, what happened to the rest of the poor bloke

. I could understand perhaps a limb or two, but internal organs? Explosive decompression or something like that maybe?

Maybe he got REALLY personal with an exploding bulk head or something...

Brag · 05-31-07, 09:23 PM

Quote:

Originally Posted by Packerton

Thanks, very good info.

Ugh I would lose my stomach if i saw a human heart or innards float up.

Stay underwater, looking down

ReM · 06-01-07, 01:52 AM

Here are some nice examples......no hearts or lungs though...

Quote:

There was no contact, but instead we were rewarded with sounds. First of all I was told that my listeners could hear a noise as though someone was banging metal with a hammer. That went on for a few minutes and then followed a sharp crack, two more muffled explosions came next and then silence. We had heard what submariners call breaking up noises which came from a ship as she sinks after disappearing from view. It seemed fair to assume that what we had heard were breaking up noises from a U Boat. And, as other ships present had also heard them and none of us had a contact it was decided to hunt no further. We formed up and went away, at 5pm we were back and what a sight met our eyes! An oil patch covered several square miles and in the middle was a large quantity of debris. "The U Boat is sunk", signalled the Starling "You may splice the mainbrace".

Quote:

Debris and oil in sufficient quantity appeared and that was the end of the hunt.

Quote:

When she had contact there were two of us on the job and matters could proceed properly. She ran in for the attack dropping her depth charges and the contact disappeared. Up came Starling and was directed to the spot. "Come over here" Walker signalled to Pryce (Woodpecker), "and look at the mess you have made". I circled round them whilst they examined their handiwork and then we dispersed to our station again.

Quote:

The pattern produced no evidence of damage, but we picked up the trail after our attack and followed it without trouble as the U Boat made no real effort to shake us off. The Boss turned up at 6.30am and between us, we put in two Extra Specials. The first one winged her and after that she laid a trail of oil wherever she went, the second one got her. Again, we got debris, but no survivors

All this from: http://www.mikekemble.com/ww2/walker4.html

Jimbuna · 06-01-07, 05:30 AM

Quote:

The DD crew found a human heart and lungs (!).

Recently read that in volume one of Clay Blair 39-42

Don't recall the sub number off the top of my head though

IIRC the heart had dozens of wood splinters in it and resembled a pin cushion

BigBadVuk · 06-01-07, 03:18 PM

Quote:

Originally Posted by ReM

Here are some nice examples......no hearts or lungs though...

Quote:

There was no contact, but instead we were rewarded with sounds. First of all I was told that my listeners could hear a noise as though someone was banging metal with a hammer. That went on for a few minutes and then followed a sharp crack, two more muffled explosions came next and then silence. We had heard what submariners call breaking up noises which came from a ship as she sinks after disappearing from view. It seemed fair to assume that what we had heard were breaking up noises from a U Boat. And, as other ships present had also heard them and none of us had a contact it was decided to hunt no further. We formed up and went away, at 5pm we were back and what a sight met our eyes! An oil patch covered several square miles and in the middle was a large quantity of debris. "The U Boat is sunk", signalled the Starling "You may splice the mainbrace".

Quote:

Debris and oil in sufficient quantity appeared and that was the end of the hunt.

Quote:

When she had contact there were two of us on the job and matters could proceed properly. She ran in for the attack dropping her depth charges and the contact disappeared. Up came Starling and was directed to the spot. "Come over here" Walker signalled to Pryce (Woodpecker), "and look at the mess you have made". I circled round them whilst they examined their handiwork and then we dispersed to our station again.

Quote:

The pattern produced no evidence of damage, but we picked up the trail after our attack and followed it without trouble as the U Boat made no real effort to shake us off. The Boss turned up at 6.30am and between us, we put in two Extra Specials. The first one winged her and after that she laid a trail of oil wherever she went, the second one got her. Again, we got debris, but no survivors

All this from: http://www.mikekemble.com/ww2/walker4.html

I must ask...during the reading of this page i bumped few times in "Extra Special" so what is extra special??

05-31-07, 03:12 PM	#1
Packerton Sonar Guy Join Date: Apr 2007 Location: Newfoundland,Canada Posts: 398 Downloads: 6 Uploads: 0	How did DDs know they got a Submarine? Like Really would they just chase after it until they were outta DCs or something? Would they keep Depth chargeing a Neutralized sub? EDIT: Sorry Title should of been "Killed" a Submarine

05-31-07, 03:29 PM	#2
Crimguy A-ganger Join Date: Jul 2002 Location: In a trench outside Vicksburg Posts: 73 Downloads: 6 Uploads: 0	IRL the following would happen: They'd look and listen for signs of a kill. Debris is the most obvious symptom. There was a sub, for example, that was sank in March '42 off the coast of the US. The DD crew found a human heart and lungs (!). Clothing, wood, and supplies/provisions might float to the surface. An extremely large oil slick is another symptom (don't remember if diesel leaves an oil slick). Sometimes the passive sonar operator would hear the crushing noises on their gear. Sometimes there would be no symptoms. On many occasions, the uboat got "lucky" because the DD erroneously thought he got a kill and took off. Much of what happened involved a decent amount of guesswork. On the flip side, the uboat skippers were wrong to the tune of about 40-50% as to how much tonnage they sunk. Frequently, the tanker they thought was going down got the fires under control and limped back to port. __________________ -=-=-=-=-=- Crimguy

05-31-07, 05:17 PM	#3
Packerton Sonar Guy Join Date: Apr 2007 Location: Newfoundland,Canada Posts: 398 Downloads: 6 Uploads: 0	Thanks, very good info. Ugh I would lose my stomach if i saw a human heart or innards float up.

05-31-07, 06:53 PM	#5
Steel_Tomb Ace of the Deep Join Date: Mar 2007 Location: Cambridgeshire - UK Posts: 1,128 Downloads: 0 Uploads: 0	Lol, I think we could all agree with that. Begs the question though, what happened to the rest of the poor bloke . I could understand perhaps a limb or two, but internal organs? Explosive decompression or something like that maybe?