Mods to fix sonar and allow me to sit on the seafloor without taking damage?

[Fahnenbohn]

Originally Posted by CjStaal

Even in GWX sonar is pretty unrealistic. Is there any mod that will make it more realistic and also allow me to bottom out on to the sea floor to make me indistinguishable to the sonar?

Stiebler wrote a patch for SH3, in which there is the option that allows your Sub to be less detected by the asdic (sonar) in shallow waters.

From the README :

"It was always much harder to detect U-boats with asdic in shallow waters than in deep water, due to tides, wrecks, rocks and similar. From October 1944 - May 1945, U-boats with schnorchels patrolled very close to land around the British Isles, the so-called ‘Inshore Campaign’, relying for their protection on the poor detection ability of Asdic in shallow waters, with their fast tides, large rocks and ancient wrecks.

SH3 does not model the failure of Asdic in shallow water at all. This mod changes asdic capability according to the depth of the sea. Specifically, the ‘minimum surfaces’ (MinSurface, MS) of asdics (original values found in file ‘AI_Sensors.dat’) are now changed according to sea-depth in four bands :

Depth > 150m: MS = 100 (m2, metres squared).
Depth >100m: MS = 150.
Depth >50m: MS = 200.
Depth < 50m: MS = 300.

The ‘MinSurface’ refers to the amount of U-boat hull (in square metres) that must be impacted by the Asdic ping, if the warship sending the ping is to get a detection echo. These changes are not dependent on the year, they will apply throughout the war. Now you can prowl around the British Isles with much less chance of being detected.

It is necessary to use a single unique value for asdic minimum surfaces in AI_sensors.dat in all the supermods, if this mod is to function. The unique value of 100.0 has long been used in NYGM, and appears effective in practice. Other supermods may use different figures, for Asdic ‘MinSurface’, and these will need to be changed in the super-mods’ AI_Sensors.dat file (found in silenthunteriii\data\library). For example, both the stock SH3 game and GWX have values for MinSurface of 0.0.

A list of the Asdics is given below:
QGAA, QC1A, QCeA, 147A, 144A, 128A, 123A.
Unfortunately, you cannot change these values in a text editor. You must use a data editor, such as TimeTraveller’s ‘FileAnalyzer’, or Skywas’s ‘Sd3Ditor’. FileAnalyzer is easier to use for this purpose.

Once these changes to MinSurface have been made, then install your new AI_Sensors.dat file to replace your original file. The mod will now be active. Alternatively, you can disable the Shallowwaters Mod with the Options Selector."


LINK : http://www.subsim.com/radioroom/showthread.php?t=217396


Nota Bene : First, you have to patch a fresh copy of SH3.exe with H.sie's V16B1 patch-kit. All explanations in the link and in Readme files !

If you want to keep a normal copy of SH3.exe (non patched), you should use S3F : http://www.subsim.com/radioroom/show...12&postcount=4

LINK for H.sie hardcode fixes : http://www.subsim.com/radioroom/showthread.php?t=174225