Incoming!

Kielhauler1961 · 09-08-08, 10:52 AM

Quote:

At 00.08 hours on 2 Jul, 1943, the unescorted Bloody Marsh (Master Albert Harrison Barnes) was on her maiden voyage, when the ship´s torpedo indicator sounded after detecting the approach of a torpedo from U-66.

Bejeeezus! It not only picks up the sound of the torpedo but it also knows the number of the boat that fired it as well???

Whats next? Your home mailing address?

U-104 · 09-08-08, 10:58 AM

:rotfl::rotfl:

Sailor Steve · 09-08-08, 12:02 PM

Quote:

Originally Posted by Kielhauler1961

Quote:

At 00.08 hours on 2 Jul, 1943, the unescorted Bloody Marsh (Master Albert Harrison Barnes) was on her maiden voyage, when the ship´s torpedo indicator sounded after detecting the approach of a torpedo from U-66.

Bejeeezus! It not only picks up the sound of the torpedo but it also knows the number of the boat that fired it as well???

Whats next? Your home mailing address?

:rotfl:

"Skipper, we have an incoming torpedo! It's a G7A steam torpedo running a little slow at 41.3 knots, and the tube it was fired from is leaking. U-66 has made a left-hand turn and is watching us from periscope depth! The captain has just said..."

KABOOOOM!!!

I-25 · 09-08-08, 12:33 PM

LOL :rotfl:

bigboywooly · 09-08-08, 12:44 PM

IIRC most Br battleships\cruiser also carried such devices
Will see if I can dig out my research

I expect that particular device was used by many battlewagons

There is a distinct diffeence to that though and the hydrophones some Jap ships are fitted with in SH4

Mush Martin · 09-08-08, 12:47 PM

I imagine it listened for the common frequencies of highspeed
screws and wouldve likely had three hydrophones

I further would suppose that the display would not be
dissimilar to the depth charge direction display on later
US subs. ie. a circle of lights eight/sixteen? that represent
the circumference around the ship and the hydrophones
registering the highspeed sound would light the bulb on
the indicator in the appropriate quarter of the display

thats all a guess.
M

GoldenRivet · 09-08-08, 12:57 PM

u-boats were equipped with such a device as well.

it was called "TAG".

It was installed in the control room of the XXI and was set to listen for pre-determined high pitched prop sounds, if one of these pre-programmed sounds was heard, a warning would sound in the u-boat would alert the crew.

I would imagine the allied system was very similar.

Puster Bill · 09-08-08, 02:39 PM

Quote:

Originally Posted by GoldenRivet

u-boats were equipped with such a device as well.

it was called "TAG".

It was installed in the control room of the XXI and was set to listen for pre-determined high pitched prop sounds, if one of these pre-programmed sounds was heard, a warning would sound in the u-boat would alert the crew.

I would imagine the allied system was very similar.

That device is what I consider to be "proof" that the germans knew about the FIDO.

I find it hard to believe that a device that had a 25% success rate wasn't noticed by hydrophone operators, and then reported to BdU, by the boats that survived.

Jimbuna · 09-08-08, 03:27 PM

Quote:

Originally Posted by Puster Bill

Quote:

Originally Posted by GoldenRivet

u-boats were equipped with such a device as well.

it was called "TAG".

It was installed in the control room of the XXI and was set to listen for pre-determined high pitched prop sounds, if one of these pre-programmed sounds was heard, a warning would sound in the u-boat would alert the crew.

I would imagine the allied system was very similar.

That device is what I consider to be "proof" that the germans knew about the FIDO.

I find it hard to believe that a device that had a 25% success rate wasn't noticed by hydrophone operators, and then reported to BdU, by the boats that survived.

A smal problem being that FIDO was generally used on boats that were in crash dive mode and probably not in the best position to be 'listening'

Steeltrap · 09-08-08, 06:50 PM

Peter Cremer in U-333: The Story of a U-Boat Ace asserted the Germans knew nothing of FIDO until after the war. Given his operational experience plus posting at BdU, one would think he would know.

U-104 · 09-08-08, 03:14 PM

Quote:

Originally Posted by Sailor Steve

Quote:

Originally Posted by Kielhauler1961

Quote:

At 00.08 hours on 2 Jul, 1943, the unescorted Bloody Marsh (Master Albert Harrison Barnes) was on her maiden voyage, when the ship´s torpedo indicator sounded after detecting the approach of a torpedo from U-66.

Bejeeezus! It not only picks up the sound of the torpedo but it also knows the number of the boat that fired it as well???

Whats next? Your home mailing address?

:rotfl:

"Skipper, we have an incoming torpedo! It's a G7A steam torpedo running a little slow at 41.3 knots, and the tube it was fired from is leaking. U-66 has made a left-hand turn and is watching us from periscope depth! The captain has just said..."

KABOOOOM!!!

:rotfl::rotfl::rotfl::rotfl:

09-08-08, 10:58 AM	#2
U-104 Grey Wolf Join Date: Aug 2005 Location: United States Posts: 797 Downloads: 187 Uploads: 0	:rotfl::rotfl: __________________ My heart is steadfast, O God. I will sing and make music with all my soul. Ps. 108:1 Survival of the fittest does not explain arrival of the fittest. we live in a single spoken sentence.. "God said, let there be"

09-08-08, 12:44 PM	#5
bigboywooly Rear Admiral Join Date: Apr 2006 Location: Swindon, England Posts: 10,151 Downloads: 35 Uploads: 0	IIRC most Br battleships\cruiser also carried such devices Will see if I can dig out my research I expect that particular device was used by many battlewagons There is a distinct diffeence to that though and the hydrophones some Jap ships are fitted with in SH4 __________________ My mediafire page http://www.mediafire.com/?11eoq19bq9r41

09-08-08, 12:47 PM	#6
Mush Martin Eternal Patrol Join Date: Dec 2006 Posts: 4,398 Downloads: 4 Uploads: 0	I imagine it listened for the common frequencies of highspeed screws and wouldve likely had three hydrophones I further would suppose that the display would not be dissimilar to the depth charge direction display on later US subs. ie. a circle of lights eight/sixteen? that represent the circumference around the ship and the hydrophones registering the highspeed sound would light the bulb on the indicator in the appropriate quarter of the display thats all a guess. M __________________ RIP Mush Tutorial

09-08-08, 12:57 PM	#7
GoldenRivet Subsim Aviator Join Date: Mar 2007 Location: Texas Posts: 8,726 Downloads: 146 Uploads: 0	u-boats were equipped with such a device as well. it was called "TAG". It was installed in the control room of the XXI and was set to listen for pre-determined high pitched prop sounds, if one of these pre-programmed sounds was heard, a warning would sound in the u-boat would alert the crew. I would imagine the allied system was very similar. __________________ Last edited by GoldenRivet; 09-08-08 at 01:10 PM.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

09-08-08, 12:33 PM	#4
I-25 Commodore Join Date: Aug 2003 Location: Bavaria, Germany Posts: 629 Downloads: 27 Uploads: 0	LOL :rotfl:

09-08-08, 06:50 PM	#10
Steeltrap Grey Wolf Join Date: Mar 2001 Location: Sydney, Australia Posts: 818 Downloads: 3 Uploads: 0	Peter Cremer in U-333: The Story of a U-Boat Ace asserted the Germans knew nothing of FIDO until after the war. Given his operational experience plus posting at BdU, one would think he would know.