[REL] U-boat Historical Specifications (UHS)

[ddrgn]

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U-boat Historical Specifications 1.6 by ddrgn
updated April 16, 2011
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Historic specifications Information based on the following specification pages and survivor interrogations:

Sites:
http://www.uboatarchive.net/U-257INT.htm
http://www.uboatarchive.net/U-413INT.htm
http://www.uboatarchive.net/KTBNotesArmament.htm
http://www.uboat.net/technical
http://www.uboataces.com/uboat-type-vii.shtml

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Overview and Goal:
A complete overhaul of submarine systems and specifications to accurately reflect historical data known today. This mod is not for the faint of heart. In rough seas you will slow down, have less maneuverability and burn off fuel fast. You will have slightly slower dives. External torpedoes will take longer to reload on the surface. Your AA is increased but your warnings and radars and decreased quite a lot.

Hit points for each boat is now equal. On the other hand you will have some advantages, more accurate crush depths. Quicker steeper climbs. Longer decoy times, increased ammunition storage, and deck shell damage. Quicker reload times for both AA and DG. Radars function properly in high swells.

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Features of UHS (changed to be historically accurate wherever possible):

-Ammunition loadouts, crush depths, max speeds, max ranges, lengths (bow to stern).
-Hydrophone and visual detections, external reload times
-Drafts and displacement changed and look great in game
-Ammunition storage for the deck gun and anti-aircraft weapons. Nice roll and wavy feeling, no strong bobbing effect.
-Accurate submarine draught, displacements submerged and surfaced,
-Pitch and roll mechanics changed for playable submarines to look/feel more realistic.
-Radar works in choppy seas (does not shut off).
-Compatible with most environment, skin, command keys, artificial intelligence and interface mods.
-Less sensitive radar warning detections. Radar detected now means aircraft are in the immediate vicinity.
-Radar sets Fumo 29/30 and Fumo 61/65 max ranges decreased as per historical specifications.
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Change Log:

Version 1.7 (04/17/2010)
-Reduced hydrophones detection range to -7; -5 caused issues in rougher seas and heavier boats
-Removed the rod antenna from TDW compatible version; was still popping out of the water at times
-Added compatibility for Equipment Upgrades Fix Mod by merging the anti-sensor coatings settings in UBoot_sensors.sim; UHS installs after this mod

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Version 1.6 (04/11/2010)

-Changed the highlighted torpedo information text to reflect changes in range made in 1.5.
-Included Depth Keeping Problem Fix by TheDarkWraith
-Included No hydrophone on Surface, No Aircraft Spotting Submerged by TheDarkWraith
-Increased pitch and roll mechanics on all playable subs
-Changed attack scope height to 4.2 from 8.5; and obs from 3.0 to 3.3
-Periscope depth adjusted and the dive command changed back to 100 meter (fixed due to DKPF)
-Changed hydrophones to work after -5 meters
-Added compatibility version for Ui-Boat 4.0
-Compatibility has been passed for CSP MaGUI; install UHS after CSP MaGUI
-Added Compatibility for NewUI's 6.4, IRAI 0.30 and FX_Update 16.2 included as separate mod install; overwrites the torpedoes_g7a-e.sim, UBoot_Sensors.sim, U-boat cfg, sim and zon files. Install after any and all TDW
-Added VisibleUnderWater controller round and rod antenna, and set the value to false; will not see the radio antenna from the NewUI's underwater, but will come back when surfaced. This only applies to users of TheDarkWraith's NewUI's.

Version 1.5 (not released)

-Added changes to torpedo specifications:
-T1 Changed low, med, high speed to give 14000,8000,6000m range
-T1 Lowered the impulse ratio from 2000 to 1500
-T1 Decreased depth keeping problems from 70% to 25%
-T1 Increased MinEF and MaxEF of torpedo damage 25%
-T1 Increased Max Damage Radius from 7 to 10m
-T1 Decreased Min Damage from 3 to 1m
-T1 changes include Fat and LuT versions to the same settings
-T2 Lowered the impulse ratio from 2000 to 1500
-T2 Decreased depth keeping problems from 70% to 25%
-T2 Increased MinEF and MaxEF of torpedo damage 25%
-T2 Increased Max Damage Radius from 7 to 10m
-T2 Decreased Min Damage Radius from 3 to 1m
-T3 Lowered the impulse ratio from 2000 to 1500
-T3 Decreased depth keeping problems from 70% to 25%
-T3 Increased MinEF and MaxEF of torpedo damage 35%
-T3 Increased Max Damage Radius from 7 to 10m
-T3 Decreased Min Damage Radius from 3 to 1m
-T3 Decreased the FaT2 version of T3 range from 7315 to 5000m
-T3 changes include Fat version to the same settings
-T4 Lowered the impulse ratio from 2000 to 1500
-T4 Decreased depth keeping problems from 70% to 25%
-T4 Increased MinEF and MaxEF of torpedo damage 35%
-T4 Increased Max Damage Radius from 7 to 10m
-T4 Decreased Min Damage Radius from 3 to 1m
-T5 Lowered the impulse ratio from 2000 to 1500
-T5 Increased MinEF and MaxEF of torpedo damage 35%
-T5 Increased Max Damage Radius from 7 to 10m
-T5 Decreased Min Damage Radius from 3 to 1m
-T5 Decreased max speed from 24.5 to 24 knots
-T7 Lowered the impulse ratio from 2000 to 1500
-T7 Increased MinEF and MaxEF of torpedo damage 25%
-T7 Increased Max Damage Radius from 7 to 10m
-T7 Decreased Min Damage Radius from 3 to 1m
-T11 Lowered the impulse ratio from 2000 to 1500
-T11 Increased MinEF and MaxEF of torpedo damage 35%
-T11 Increased Max Damage Radius from 7 to 10m
-T11 Decreased Min Damage Radius from 3 to 1m
-T11 Decreased max speed from 24.5 to 24 knots
-T11 Straight run changed from 150 to 400m

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Version 1.4
-Raised, draft and center of gravity on all boats
-Dive and crash dive depths fixed and now maintain depth properly

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Version 1.3 (Important Update - Patch 1.2 Compatibility Fix)
Notes: Version 1.3 is compatible with patch 1.2

-Decreased deck gun damage x2
-Increased external reload times

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Version 1.2 (Important Update - Fixes 1.1)

Notes: My previous sea trials were not comprehensive enough to permit the boats of being sea worthy. Discovered a few issues with maintaining depth and odd looking pitch angles. We also noticed we could not level out properly at specific depths. Going back to the drawing board we found a nice ratio to use when changing the mass and displacements that work really well with drafts and gravity centers. All boats have passed the sea trials this time with a more vigorous testing procedures.

-Fixes VIIA not maintaining depth below 75m or more. In stock you would just keep sinking without speed.
-Fixed subs not maintaining depth all VIIA,B,C,C/41
-Crash dive depth for VIIA,B,C is now 150 m, for VIIC/41 its not 170m
-Adjusted periscope depths so scopes will stick out of the water only slightly when fully raised
-Adjusted gravity, front/rear centers, mass, draft, and displacements submerged/surfaced to fit with new ratio.

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Version 1.1
-Displacement of surface and submerged submarines to be more historically accurate, nice effect adding to pitch/roll.
-AA reloads times improved to be more realistic, average in stock is 8-9 sec, should be 5-6 seconds.
-Moved center of gravity of all subs up 15%. Nice effect in wavy conditions subs bob up/down more realistically.
-Moved center of gravity 0.020% forward for all subs. This shows a slight increase to weight aft while declining or inclining.
-AA guns fire are set to fire AA shells not AP shells
-37mm in real life had a clip of 25 with a rate of fire of 50 rounds per minute. In order to give the 37mm a FLAK feeling they set the clip to hold 1 round and reload every second. Reload time is already off in the game so I have changed the reload time of the clip to 0.2 seconds. You maybe be able to get 40-50 rounds per minute now.
-Max ranges for all playable boats is accurate historically submerged and surfaced knots/miles
-Draft changed less historically accurate in the settings but looks more accurate when playing
-Deck gun storage to include 105 AP and 80 HE shells as per U-Bootskunde f.U-Boot Bauart VIIC-194
-Shells deck gun damage by 3x, 7-10 good shots will seriously wound a ship if not sink it
-Radar does not turn off and on when in high swells
-Radar max ranges decreased to be more historically accurate. Fumo 29/30 set to 7100m. Fumo 61/65 10200m.

Fumo61/65 would detect aircraft at 20km, and surfaced ships at 10km. Devs set this to 15km for average. For gaming purposes, and considering you have radar warning sensors for aircraft I changes this 10200m. You will now only detect surfaced ships at 10km as per history. Aircraft are not as important as surfaced vessels in my opinion. The stock setting is not fair to the merchant men.

-Radar warning detection via Metox, Borkum, Tunis, Naxos drastically reduced. In the best cases these units could detect incoming aircraft from 10km. Metox, Borkum, 8km, Tunis 10km and Naxos 5km. Now as per real operations when you recieve radar signals detected, submerge....

-Decoy average lifetimes increased slightly. Average stock was 10-20 mins with the mod decoys will last 20-25 mins.
-External torpedo load times increased to 60 mins
-AA ammunition storage be more historically accurate according to U-boat and weapon type:
20MM C30: 1500 rounds (based on info in M.Dv 381 U-Bootskunde f.U-Boot Bauart VIIC-1940)
20MM C30x2: 1500 rounds
C38 Twin: 1200 rounds (based on the manifest found with U-257/413, if you have 2 (VIIC/41) installed you only get 1200 per unit.
37MM: 1250 rounds
Vierling: 1250 rounds

*This can be argued either way for more or less. I averaged the information and in realistic terms I am sure the loadouts would vary depending on available space and requirements.

-Periscopes depth changed on boats slightly to accommodate changes in displacement, draught
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Version 1.0

-Dive depth set to Erich Topp operational depth of 100m, all boats. (Hit "V" you go to 100m)
-Periscope depth on all boats to 14m (stock is 12).
-The lengths, maxspeed surfaced, maxspeed submerged of all type 7's to be more historical.
-The crush depth gauge on the 7C/41 to read 250m (crew will warn you at 250m)
-All Type 7 boats hit points to 250. Historically I see no reason for any of the Type 7's to resist damage more than the other.
-Crush depth on all Type 7's to be historically accurate. In stock the crush depth for type 7A,B,C is 180 meters.

Your crew will not warm you of your hull damage until 200m on A,B,C. So you take damage for 20 meters before any warning in stock, this is fixed with this mod. Type 7C/41 will go 250m now and they will warn you when you start taking hull damage. Stock 7C/41 is set to 300m with an actual crush depth of 215m. Set as 350 in the config, crush depth seems to have a ratio of 1.4, set it at 285 = 200 etc...

*Note, you do not crush immediately with these settings, you only start taking damage at this point, so it's still to be determined just how deep you can go and live (as per real life).

-Hydrophone sensors crew fatigue factor to false
-U-boat visual sensor range to 20km. Crew will now see ships at 17km in good conditions. Stock was 15km.
-Hydrophones do not function on the surface anymore, sensor now has to be below 10m to work.
-Increased hydrophones sensors to contact from 40% further away. Stock has it set on average around 30km.

In real life and good conditions convoys could be heard from 100k out and single ships from 35 km. To find a balance I increased the hydrophones max range from 50-65 km based on which set your using. You may not hear them yourself, but in perfect conditions you should get sound contacts from much further away than stock.

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Installation via JSGME.

*IMPORTANT* This mod must be installed before starting a new campaign. It is not recommended to install mid patrol or even at the end of or before a patrol. This mod is not compatible with mods that change the submarines .zon .sim or .cfg files except when using the Compatibility Fix. Feel free to use this mod as long as credit is given. Although, I do suggest contacting me for help with compatibility and for the latest internal version.

TDW mods version; install U-boat Historical Specifications 1.6 for TDW Mods after all TDW mods
example loadout:


Ui-Boat mods version; install U-boat Historical Specifications 1.6 for Ui-Boat

WARNING!!!
DO NOT INSTALL UHS DURING A PATROL, FINISH YOUR PREVIOUS PATROL, DOCK, SAVE, QUIT AND INSTALL UHS, RESTART GAME...

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Misc info:

-Effects are reached WITHOUT editing the waves amplitude or attenuation in the sim.cfg. I do not touch the sim.cfg in this mod. As previously mentioned by others before me, it is not recommended to change the sim.cfg as it leads to problems with AI and PLAYER detections (especially visual).
-No changes to env/seaparameters.cfg, allowing this mod to work with all major environments currently available.

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Download link: http://www.subsim.com/radioroom/down...o=file&id=1775
Good hunting -ddrgn

[Yoram777]

Sounds good, I'll give it a go.
thanks

[gimpy117]

I thought the VIIC/41 could go to 295 M... somebody calculated it and said it was the theoretical max...

[ddrgn]

Originally Posted by gimpy117

I thought the VIIC/41 could go to 295 M... somebody calculated it and said it was the theoretical max...

In real life or in the game?

In real life it was reinforced to go to 250m, that's the specification history is recording.

[gimpy117]

really? hrm...is that max safe depth or crush depth?
wikipedia has the VIIB and VIIA listed as crushing at 230-250 M the VIIC at 250-295 M and the VIIC/41 at 275-325 M

[ddrgn]

Originally Posted by gimpy117

really? hrm...is that max safe depth or crush depth?
wikipedia has the VIIB and VIIA listed as crushing at 230-250 M the VIIC at 250-295 M and the VIIC/41 at 275-325 M

Right I see where your reading this on the wiki, the boat was safe until 250m. I guess they assumed it would crush between 250-295...

The boat with this mod will start to crush at 250m, so fits in well with the wiki info.

http://en.wikipedia.org/wiki/German_Type_VII_submarine

Same goes for the other boats, safe depth being 200m on the gauge, anything after that would be pure speculation.

I think the record recorded (and returned from) was 230m approximately. Not sure which boat, it was talked about some in another thread I can not seem to find atm.

QUICK EDIT: Thinking the VIIC/41 could go 325m is madness, not sure where wiki got those facts from. To think a crew in 1943 would be brave enough to attempt this is madness in itself.

[ddrgn]

Major update applied - will be updated come patch 1.2

[Captain von Keldunk]

Downloading now
Also I have removed submarine folder from Sh5EnvMod 3.0Multi
so no conflicts with your mod.

[subaxe]

only 1.0 available for dowload 15k file

[ddrgn]

Thanks I just noticed that - 1.1 is now added in the download section.

[ddrgn]

Originally Posted by Captain von Keldunk

Downloading now
Also I have removed submarine folder from Sh5EnvMod 3.0Multi
so no conflicts with your mod.

Yep, it certainly works really nice with your mod ;]

[subaxe]

np installing now
thanks

[ddrgn]

Here is a nice video that shows "some" of the changes in the mod, specifically the pitch and roll effects along with changes to the AA cannons.

[ncorpuz34]

Using over the SH5 Env Mod. Definitely the best pitch&roll and draft heights I've seen yet~! Keep it up

[Capt Jack Harkness]

For some reason with this mod my sub has trouble maintaining depth. It always ends up overshooting dives by up to 10 meters before coming back up to around 2-4 meters below the ordered depth with a slightly nose-up attitude, as if it's fighting negative bouyancy.