Type xx1 boat, deep attacks!!

Hans-Ulrich Rudel · 04-11-07, 10:26 AM

Can anybody tell me if it is possible to attack ships underwater, with no visual contact to the target. I notice a message always comes up when I begin a mission, "hydrophones Damaged" I know that in real life a commander could attack targets, at depth, say 120 mtrs. It would be great to attack targets deep underwater. Thanks for the forum.

danlisa · 04-11-07, 10:31 AM

The XXI is very buggy in stock SH3 but it is fixed in GWX.

I think you can conduct an attack with the XXI using just the sonar but certainly not as deep as 120m. I think the limit (without modding it) in the XXI is about 25 - 30m which is more than the other types.

3Jane · 04-11-07, 10:34 AM

As I understand it, the tyoe XXI could fire torpedos from below periscope depth using a hydrophone system designed for the task. Not sure how deep the attacks could take place at though.

http://ipmsstockholm.org/magazine/20..._uboot_xxi.htm

http://ipmsstockholm.org/magazine/19...ersen_uxxi.htm

Letum · 04-11-07, 10:36 AM

It was a feature in the XXI's design brief, but not a feature in commander training.
The XXI can fire from a max of 50m depth.

Jimbuna · 04-11-07, 11:05 AM

Attacks in RL using hydrophones did take place but very rarely. Torpedos could not be launched as deep as 120m because of the water pressure....the internal watertight tube doors were not designed to withstand such pressure

Heibges · 04-11-07, 01:25 PM

In real life, a fully underwater attack without the the aid of the periscope never took place in combat in WWII.

Maybe the Germans did it in training, and there is a story about a simulated attack in the last days of the war, but a real fully submerged attack never took place in WWII.

Additionally, when England sank the Argentine Cruise during the Falklands War, the captain of the British sub confirmed his firing data through the periscope.

Jimbuna · 04-11-07, 01:38 PM

Quote:

Originally Posted by Heibges

In real life, a fully underwater attack without the the aid of the periscope never took place in combat in WWII.

Maybe the Germans did it in training, and there is a story about a simulated attack in the last days of the war, but a real fully submerged attack never took place in WWII.

Additionally, when England sank the Argentine Cruise during the Falklands War, the captain of the British sub confirmed his firing data through the periscope.

Have a look here mate

http://uboat.net/boats/u864.htm

Hans-Ulrich Rudel · 04-11-07, 04:30 PM

Quote:

Originally Posted by danlisa

The XXI is very buggy in stock SH3 but it is fixed in GWX.

I think you can conduct an attack with the XXI using just the sonar but certainly not as deep as 120m. I think the limit (without modding it) in the XXI is about 25 - 30m which is more than the other types.

I have tried fireing torps from the sonar, but i cannot figure how to do it yet! Please advise me. Thanks

XanderF · 04-11-07, 06:28 PM

It'd have to be totally manual. Calculate the solution entirely on the board (get range and bearing a few times, draw line between points to get course and thus AOB), enter the TDC data manually, etc.

Mittelwaechter · 04-11-07, 07:10 PM

Maybe you want to take a look in here: http://www.subsim.com/radioroom/showthread.php?t=110619

Video-Tutorial (~ 123 MB) for an underwaterattack using only passive hydrophones.

Have fun!

Jimbuna · 04-12-07, 04:08 AM

Missed that first time round...Cool

Heibges · 04-13-07, 11:44 AM

Quote:

Originally Posted by jimbuna

Quote:

Originally Posted by Heibges

In real life, a fully underwater attack without the the aid of the periscope never took place in combat in WWII.

Maybe the Germans did it in training, and there is a story about a simulated attack in the last days of the war, but a real fully submerged attack never took place in WWII.

Additionally, when England sank the Argentine Cruise during the Falklands War, the captain of the British sub confirmed his firing data through the periscope.

Have a look here mate

http://uboat.net/boats/u864.htm

Both subs were at periscope depth, the British launched their attack with the periscope, and the British Captain said the German crew was practicing very poor periscope discipline.

azn_132 · 04-13-07, 03:21 PM

Can a moderator delete this post? My liitle bro put this.

Crazy Ian · 04-13-07, 05:21 PM

I'm proud to say I've done a Sonar only attack in Silent Hunter III, in my trusty VII-B

*Admitedly it was against a Destroyer charging straight at my stern doing 20 odd knots when I fired a T-V at the blighter..*

04-11-07, 10:26 AM	#1
Hans-Ulrich Rudel Watch Join Date: Mar 2007 Location: Perth Western Australia Posts: 26 Downloads: 0 Uploads: 0	Type xx1 boat, deep attacks!! Can anybody tell me if it is possible to attack ships underwater, with no visual contact to the target. I notice a message always comes up when I begin a mission, "hydrophones Damaged" I know that in real life a commander could attack targets, at depth, say 120 mtrs. It would be great to attack targets deep underwater. Thanks for the forum. __________________ *Verloren ist nur, wer sich selbst aufgibt* ("Lost are only those who give up themselves").

04-11-07, 10:31 AM	#2
danlisa Navy Seal Join Date: Oct 2005 Location: Cornwall, UK Posts: 5,499 Downloads: 45 Uploads: 1	The XXI is very buggy in stock SH3 but it is fixed in GWX. I think you can conduct an attack with the XXI using just the sonar but certainly not as deep as 120m. I think the limit (without modding it) in the XXI is about 25 - 30m which is more than the other types. __________________

04-11-07, 10:34 AM	#3
3Jane Ace of the Deep Join Date: Sep 2006 Location: York. Northern England. Posts: 1,004 Downloads: 0 Uploads: 0	As I understand it, the tyoe XXI could fire torpedos from below periscope depth using a hydrophone system designed for the task. Not sure how deep the attacks could take place at though. http://ipmsstockholm.org/magazine/20..._uboot_xxi.htm http://ipmsstockholm.org/magazine/19...ersen_uxxi.htm __________________ Fate opposes me in vitality and morality, forced ever onward, burdened, always in shackles. So this very moment, without tarrying, pluck the quivering strings. Because fate punishes the one who plays, all lament with me. (http://hosted.filefront.com/KatherineRowan)

04-11-07, 10:36 AM	#4
Letum Navy Seal Join Date: Feb 2005 Location: York - UK Posts: 6,079 Downloads: 43 Uploads: 0	It was a feature in the XXI's design brief, but not a feature in commander training. The XXI can fire from a max of 50m depth. __________________

04-11-07, 11:05 AM	#5
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,525 Downloads: 63 Uploads: 13	Attacks in RL using hydrophones did take place but very rarely. Torpedos could not be launched as deep as 120m because of the water pressure....the internal watertight tube doors were not designed to withstand such pressure __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!

04-11-07, 01:25 PM	#6
Heibges Sea Lord Join Date: Feb 2004 Location: San Francisco, California Posts: 1,633 Downloads: 1 Uploads: 0	In real life, a fully underwater attack without the the aid of the periscope never took place in combat in WWII. Maybe the Germans did it in training, and there is a story about a simulated attack in the last days of the war, but a real fully submerged attack never took place in WWII. Additionally, when England sank the Argentine Cruise during the Falklands War, the captain of the British sub confirmed his firing data through the periscope. __________________ U.Kdt.Hdb B. I. 28) This possibility of using the hydrophone to help in detecting surface ships should, however, be restricted to those cases where the submarine is unavoidably compelled to stay below the surface. http://www.hackworth.com/

04-11-07, 06:28 PM	#9
XanderF Samurai Navy Join Date: Jun 2003 Location: Portland, OR Posts: 554 Downloads: 14 Uploads: 0	It'd have to be totally manual. Calculate the solution entirely on the board (get range and bearing a few times, draw line between points to get course and thus AOB), enter the TDC data manually, etc. __________________

04-11-07, 07:10 PM	#10
Mittelwaechter The Old Man Join Date: Apr 2007 Posts: 1,304 Downloads: 35 Uploads: 0	Maybe you want to take a look in here: http://www.subsim.com/radioroom/showthread.php?t=110619 Video-Tutorial (~ 123 MB) for an underwaterattack using only passive hydrophones. Have fun! __________________ 10 happy wolves rear 90 blinded, ensnared sheep. 90 happy sheep banish the wolves. Arrest the 1% - https://www.youtube.com/watch?v=dQ6hg1oNeGE

04-12-07, 04:08 AM	#11
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,525 Downloads: 63 Uploads: 13	Missed that first time round...Cool __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!

04-13-07, 03:21 PM	#13
azn_132 Grey Wolf Join Date: Apr 2005 Posts: 950 Downloads: 0 Uploads: 0	Can a moderator delete this post? My liitle bro put this. __________________

04-13-07, 05:21 PM	#14
Crazy Ian Torpedoman Join Date: Sep 2002 Location: UK Posts: 115 Downloads: 10 Uploads: 0	I'm proud to say I've done a Sonar only attack in Silent Hunter III, in my trusty VII-B Admitedly it was against a Destroyer charging straight at my stern doing 20 odd knots when I fired a T-V at the blighter.. __________________ Make tubes 1 and 4 ready in all respects...