[2025.1] Hardcore noise solution

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Author: Xryas

Last revision: 24 Oct, 2025 at 15:34 UTC

File size: 293.32 KB

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Description:

In the original game, the escort does not pose much of a threat (if you have enough experience in the game). I decided to fix this with this mod to try to make the game more realistic, so that every attack on the convoy is a difficult task.

This mod greatly complicates the game. This mod is for those who have already mastered all the intricacies of the game and want to test their mettle. It will now be more difficult to escape from escorts and attack convoys. For the mod to work correctly, you need to start a new game. Compatibility with other mods that complicate gameplay is not guaranteed.

What exactly does the mod change:
1) enemy difficulty for the three game difficulties (easy, normal, high) is now the same; enemies will always have hard difficulty on any difficulty setting;
2) enemy hydrophone detectability has been changed; enemies can now hear the player’s boat as well as they would in real life;
3) ASDIC has been changed, now enemies can reliably find the player’s submarine (it is still possible to hide from sonar at the bottom of the sea);
4) The escort’s hunting time for the player’s boat has been increased (in one of the tests, the escort hunted the boat for 40 hours);
5) There is a chance that the escort ship hunting the boat will stop and wait for the boat to surface in order to catch it off guard.
6) Visual visibility has been added for gas torpedoes.
7) Noise visibility has been added for electric and gas torpedoes. Now the escort can hear torpedoes launched from the boat and raise the alarm before they hit their target. Torpedoing warships is now more difficult;
8) Added a speed change function for single ships and convoys to make interception more difficult.

Now let’s take a closer look at some of the features:

Hydrophone detectability (Electric engines)
Gear position
Detection range

Kleine Fahrt voraus (Dead Slow Ahead)
~250-450 meters

Langsame Fahrt voraus (Slow Ahead)
~1000 meters

Halbe Fahrt voraus (Half Ahead)
~2500 meters

GroBe Fahrt voraus (Full Ahead)
~5500 meters

AK voraus (Flank Ahead)
~8000 meters

Kleine Fahrt zuruck (Dead Slow Astern)
~250-450 meters

Langsame Fahrt zuruck (Slow Astern)
~1000 meters

Halbe Fahrt zuruck (Half Astern)
~2000 meters

AK zuruck (Flank Astern)
~6500 meters

Visual detectability for gas torpedoes (type G7a)
Enemy ship
Detection range

Transport (Empire Explorer, sunny day, side of the ship)
~500-750 meters

Transport (Empire Explorer, sunny day, stern)
~300 meters

Transport (Empire Explorer, night, side of the ship)
~100 meters

Destroyer (Tribal, sunny day, side)
~1000 meters

Destroyer (Tribal, sunny day, stern)
~650 meters

Destroyer (Tribal, night, side)
~450 meters

Noise visibility for torpedoes
Torpedo type
Detection range

G7a (Tribal, side)
~1000 meters

G7a (Tribal, torpedo ahead)
~1300 meters

G7e (Tribal, side)
~500-750 meters

G7e (Tribal, torpedo ahead)
~750 meters

Ship and convoy speeds

Convoys and single ships will now randomly change their speed at random intervals. If a ship or convoy has been attacked, after performing zigzag maneuvers, they will reach their maximum possible speed to get away from the dangerous area.

ASDIC update

Mod changes ASDIC range and detection chance factor

ASDIC
Detection range
Detection chance factor

Type 112 ASDIC
1000 meters (sonar dead zone 200m)
15%

Type 121 ASDIC
1300 meters (sonar dead zone 200m)
25%

Type 127 ASDIC
1500 meters (sonar dead zone 200m)
30%

Type 128 ASDIC
1800 meters (sonar dead zone 200m)
45%

Type 144 ASDIC
2000 meters (sonar dead zone 200m)
65%

Type 147 ASDIC
2500 meters (sonar dead zone 200m)
90%

Radar update

Mod changes Radar range.

Radar
Date
Detection range

Type 268
01.03.1941
2100-3000 meters

Type 271
01.12.1941
4500-6000 meters

Type 276
01.01.1943
7500-9000 meters

Type 277
01.04.1943
15000 meters

Type 293
01.09.1944
20000 meters