SUBSIM®  Radio Room Forums


SUBSIM: The Web's #1 BBS for all submarine and naval simulations since 1997

Go Back   SUBSIM® Radio Room Forums > Silent Hunter 3 - 4 - 5 > SHIII Mods Workshop
Forget password? Reset here

Reply
 
Thread Tools Display Modes
Old 02-19-2018, 10:25 AM   #1
schlechter pfennig
XO
 
Join Date: Mar 2010
Posts: 436
Downloads: 35
Uploads: 6
Default Depth Charge noise mod

Depth charges are an anti-submarine warfare weapon, intended to destroy a submarine by being dropped into the water in the close proximity of a suspected submarine's location, and then detonating, which subjects the target to a powerful and destructive hydraulic shock.

Their effectiveness required the combined resources and skills of many individuals during an attack. Sonar, helm, depth charge crews and the movement of other ships had to be carefully coordinated. Even so, there were two major drawbacks even the best-trained depth charge attack crew faced: one was that, in order to deploy its depth charges a ship had to pass over the contact, dropping them over the stern; sonar contact would be lost just before attack, rendering the hunter blind at the crucial moment. This gave a skillful submarine commander an opportunity to take evasive action. Secondly, in the minutes immediately following the explosion of a depth charge passive sonar was unable to track contact due to the massively disturbed and displaced water churning as a result of the explosion, and even active sonar/ASDIC had severe difficulty reacquiring contact right afterwards. This gave the aforementioned skillful submarine commander yet a second chance to disengage and evade.


The depth charge noise mod simulates both the short-term, immediate, and the long-term, lingering, effects of a depth charge explosion. When a depth charge explodes it creates a spherical explosion, leaves behind a large, roughly globular area of water churning with acoustically noisy bubbles. The depth charge noise mod still displays the visual effects of the depth charge explosion, both above the surface and beneath, but now adds a pocket of bubbles that remain behind each explosion. Each depth charge explosion now creates two invisible Bolds, one with a lifetime of five (5) minutes, an apparent surface area of 900, and a noise level of 10, and a second with a lifetime of one (1) minute, an apparent surface area of 300, and a noise level of 75. (I have no idea what effect the "noise" setting have for any given value, as that is not explained anywhere; as well, the basic Bolds have their noise value set at "0". I suspect that that value is set at the time of deployment, but I have no way of ascertaining that. )

In tests I have been able to (usually) carefully creep away under silent running from a group of eight destroyers actively hunting (and pinging) my test submarine, after the first couple of depth charge runs had created a lot of water disturbance. The escorts usually wind up repetitively depth charging the location of the "bubbled" area . . . usually. The effectiveness of the enemy escort sonar operators (whether Poor, Novice, Competent, Veteran, Elite) helps determine the effectivity of the masking effect of the disturbed water area, which means the more dangerous the enemy is, the more likely they are to successfully reacquire contact with you. As well, escorts that have been fooled by the noise disturbance into reacting to it over and over, do not get trapped into a loop and never stop attacking the hidden bubble cloud; eventually they figure it out, and leave to go hunting elsewhere.

The depth charge noise mod is meant to simulate real behavior of a specific object: that of a depth charge. It is not meant as a "Get out of jail free" card, or to make evading enemy escorts easier just to make that easy.

Feedback and comments are appreciated!

--------------------------------------

Revision history:

Version 1.0: initial release; WAC 5.0 only

Version 2.0: Usable now for 4 different game versions [stock (vanilla), GWX Gold, NYGM, and WAC 5.0]; altered the "bubble" appearance; added a second noise effect; (readme file is still for version 1.0 release; will be updated next revision)

Rev. A: (hopefully) fixed the save-and-reload-CTD bug; made adjustments to the disruption sizes, noise levels and lifetimes.

Last edited by schlechter pfennig; 03-17-2018 at 12:06 AM. Reason: updated to Rev A release
schlechter pfennig is offline   Reply With Quote
Old 02-19-2018, 04:47 PM   #2
J0313
Seasoned Skipper
 
Join Date: Nov 2010
Location: Texas
Posts: 673
Downloads: 1281
Uploads: 0
Default

Quote:
Originally Posted by schlechter pfennig View Post
http://www.subsim.com/radioroom/down...o=file&id=5326

Depth charges are an anti-submarine warfare weapon, intended to destroy a submarine by being dropped into the water in the close proximity of a suspected submarine's location, and then detonating, which subjects the target to a powerful and destructive hydraulic shock.

Their effectiveness required the combined resources and skills of many individuals during an attack. Sonar, helm, depth charge crews and the movement of other ships had to be carefully coordinated. Even so, there were two major drawbacks even the best-trained depth charge attack crew faced: one was that, in order to deploy its depth charges a ship had to pass over the contact, dropping them over the stern; sonar contact would be lost just before attack, rendering the hunter blind at the crucial moment. This gave a skillful submarine commander an opportunity to take evasive action. Secondly, in the minutes immediately following the explosion of a depth charge passive sonar was unable to track contact due to the massively disturbed and displaced water churning as a result of the explosion, and even active sonar/ASDIC had severe difficulty reacquiring contact right afterwards. This gave the aforementioned skillful submarine commander yet a second chance to disengage and evade.


The depth charge noise mod simulates both the short-term, immediate, and the long-term, lingering, effects of a depth charge explosion. When a depth charge explodes it creates a spherical explosion, leaves behind a large, roughly globular area of water churning with acoustically noisy bubbles. It still displays the visual effects of a depth charge explosion, both above the surface and beneath, as well as creating a pocket of bubbles remaining behind each explosion. It effectively creates an invisible Bold decoy with visible bubbles. Each depth charge explosion creates an invisible Bold, with a lifetime of five (5) minutes, an apparent surface area of 300, and a noise level of 1.5.

In tests I have been able to (usually) carefully creep away under silent running from a group of eight destroyers actively hunting (and pinging) my test submarine, after the first couple of depth charge runs had created a lot of water disturbance. The escorts usually wind up repetitively depth charging the location of the "bubbled" area . . . usually. The effectiveness of the enemy escort sonar operators (whether Poor, Novice, Competent, Veteran, Elite) helps determine the effectivity of the masking effect of the disturbed water area, which means the more dangerous the enemy is, the more likely they are to successfully reacquire contact with you. As well, escorts that have been fooled by the noise disturbance into reacting to it over and over, do *not* get trapped into a loop and never stop attacking the hidden bubble cloud; eventually they figure it out, and leave to go hunting elsewhere.

The depth charge noise mod is meant to simulate real behavior of a specific object: that of a depth charge., It is *not* meant as a "Get out of jail free" card.

At the moment I can only assure compatibility with WAC 5.0 (WarAceCampaign 5.0), which needs to have itself, and all its associated, mods, enabled before enabling the depth charge noise mod. These must be enabled before enabling this mod. Assuming there is sufficient interest I may make variations for other major mods.

Feedback and comments are appreciated!
Have you seen this? (TDWs DC Water Disturbance v4.0). Been around along time.
J0313 is offline   Reply With Quote
Old 02-19-2018, 05:04 PM   #3
schlechter pfennig
XO
 
Join Date: Mar 2010
Posts: 436
Downloads: 35
Uploads: 6
Default

Quote:
Originally Posted by J0313 View Post
Have you seen this? (TDWs DC Water Disturbance v4.0). Been around along time.
No, I hadn't seen that. Then again, as it seems meant only for SH4 and I only play SH3 (and my mod is only meant for SH3) I'm not surprised I hadn't seen it before.

schlechter pfennig is offline   Reply With Quote
Old 02-19-2018, 06:01 PM   #4
J0313
Seasoned Skipper
 
Join Date: Nov 2010
Location: Texas
Posts: 673
Downloads: 1281
Uploads: 0
Default

Quote:
Originally Posted by schlechter pfennig View Post
No, I hadn't seen that. Then again, as it seems meant only for SH4 and I only play SH3 (and my mod is only meant for SH3) I'm not surprised I hadn't seen it before.

No, its not just for SH4. In fact I believe it was made for SH3 first. You need to do a little more research Friend.
J0313 is offline   Reply With Quote
Old 02-19-2018, 06:09 PM   #5
J0313
Seasoned Skipper
 
Join Date: Nov 2010
Location: Texas
Posts: 673
Downloads: 1281
Uploads: 0
Default

In fact if you go to Plisskens mod archive and look under Racerboys mods ( that was The Dark Wraiths old subsim handle ) you will find it available for download. He even has 2 versions for SH3 commander that can go buy date or randomly. Can't remember where to find those but I do have a copy of the by date version.
J0313 is offline   Reply With Quote
Old 02-19-2018, 06:42 PM   #6
schlechter pfennig
XO
 
Join Date: Mar 2010
Posts: 436
Downloads: 35
Uploads: 6
Default

Quote:
Originally Posted by J0313 View Post
In fact if you go to Plisskens mod archive and look under Racerboys mods ( that was The Dark Wraiths old subsim handle ) you will find it available for download. He even has 2 versions for SH3 commander that can go buy date or randomly. Can't remember where to find those but I do have a copy of the by date version.
I've downloaded and examined the TheDarkWraith_DC_Water_Disturbance_v4_0_SH3 mod. Without any readme, or other explanation, just looking at the file name really told me nothing about what it was, did, or was intended to do. As well, the only example of his mod here on subsim's download site was the TMO2_fix_for_TDW_DC_Water_Disturbance_v2_0_SH4, so forgive me for assuming that was his only version. (I did say "Then again, as it seems meant only for SH4", after all).

I've examined the .dat file and it seems that all it does is spawn the decoy bubbles along with the depth charge underwater explosion. I'm curious as to the results others have had when using this mod, and would also welcome any explanation as to how the TheDarkWraith_DC_Water_Disturbance_v4_0_SH3 actually works.
schlechter pfennig is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:56 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright © 1995- 2018 Subsim