[nomad_delta]

Oy, my brain hurts. I've been (somewhat) systematically test firing torpedos to try to answer some of my own questions. I've answered most of my own questions with the data I've collected, but unfortunately most of the answers have been "the game is FUBAR".

Now I'm in the process of trying to figure out exactly how the data contained within each ship's .SIM file affects the ship draft/effective torpedo depth, and whether there's any conceivable way I could create a mod to fix all the massively incorrect ship draft values in the game.

So far it's not looking good, because as Krupp mentioned in his "JP Ship Dimension Fix" mod thread, the draft values in the SIM files make absolutely no sense at all. They're not entered in anything even resembling real-world or game values, and modifying them doesn't result in any any kind of predictable results.

Even if I managed to figure that out, though, I don't think it would matter because changing the SIM draft values in any meaningful way actually visibly moves the ships up & down in the game. Getting the ships anywhere near the draft values listed in the recog. manuals (which I've only been able to accomplish through massive trial & error since the values don't make any sensE) usually results in the ships appearing to 'float' above the water w/ props & rudder out in the air, or being submerged almost to 'decks awash'.

I think the most important thing I've discovered so far is this: applying IDENTICAL values to ALL settings in a ship's SIM and CFG files does not result in identical drafts or maximum torpedo depths. As best I can tell this means that the game uses the actual 3D model (or some other mystical data hidden elsewhere) to determine whether a torpedo hits or not, and the SIM file data simply modifying the placement of that model.

Some other conclusions I've come to so far:

1. Contact/Influence definitely does not seem to work properly. I've confirmed this by finding the maximum depth at which Contact Only will get reliable hits on a ship, then firing a full salvo of torpedos set to Contact/Influence at just 1 foot below that depth and having ALL of the torpedos miss entirely. In all of my testing I have not been able to get any Influence detonations with torpedo depths set below what I determined the maximum Contact Only depth to be. This tells me that Influence detonations are not working properly.

2. The torpedo depth setting dial DOES change from Feet to Meters depending on whether you have the game set to Imperial or Metric, respectively. So with the game set to metric, setting the torpedo depth to '10' results in 10 meters (32.8 feet), while the same dial value on Imperial would result in 10 feet (3 meters). The game does seem to perform the conversions properly and consistently, so at least something works!

Anyway, I haven't even really begun to process all of the information I've gathered so far, but I'm still working on it & I'll post more information as I find it. Here's the raw data for those of you who might be interested -- it's a little cluttered 'cause I haven't had time to format it to be easier to read:

TORPEDO FIRING TESTS
"Torpedo Attack" training mission against Mogami Heavy Cruiser
According to in-game recog. manual, Mogami Heavy Cruiser has a draft of 4.4 meters, which converts to 14.5 feet.
The NCA_Mogami.sim data file contains the following values:
mass=9500
gc_height=6
fr_ratio=0.5
put_on_water=1
displacementSurfaced=0
draightSurfaced=0
dragSurfaced=0.5
displacementSubmerged=0
draughtSubmerged=10.5
dragSubmerged=0.5
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth: 29, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 29, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 28, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (Destroyed)
Torpedo Depth: 28, Contact, Fast
1. HIT
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 27, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 27, Contact, Fast
1. HIT
2. HIT
3. HIT
4. MISS (under)
Torpedo Depth: 26, Contact/Influence, Fast
1. HIT
2. HIT
3. MISS (under)
4. HIT (destroyed)
Torpedo Depth: 26, Contact, Fast
1. HIT
2. HIT
3. MISS (under)
4. HIT (destroyed, sank within approx 1 minute)
Torpedo Depth: 25, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 25, Contact, Fast
1. HIT
2. HIT
3. HIT
4. MISS (under)
Manual Targeting: DISABLED
Measurement Units: METRIC
Torpedo Depth: 25, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS( under)
Torpedo Depth: 25, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 10, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 10, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 9, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 8.5, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 8.5, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 8, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 8, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 4.5, Contact/Influence, Fast
1. MISS (under)
2. HIT
3. HIT
4. HIT
Torpedo Depth: 4.5, Contact, Fast
1. HIT
2. DUD
3. HIT
4. HIT
Torpedo Depth 4, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth 6, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
__________________________________________________ _
Changed draughtSubmerged value in NCA_Mogami.sim data file to '5.25'.
NOTE: This VISIBLY moved the entire ship up vertically in the game so that the propellers and rudder were approx 1/3rd out of the water.
Manual Targeting: DISABLED
Measurement Units: METRIC
Torpedo Depth 8.5, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth 4, Contact/Influence, Fast
1. HIT
2. MISS (under)
3. HIT
4. HIT
Torpedo Depth 4.5, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. HIT
4. MISS (under)
Torpedo Depth 5, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth 27, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth 13.5, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth 14, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT (destroyed, sunk after approx 2 minutes)
4. MISS (under)
Torpedo Depth 14.5, Contact/Influence, Fast
1. MISS (under)
2. HIT
3. MISS (under)
4. HIT
Torpedo Depth 14.5, Contact, Fast
1. HIT
2. MISS (under)
3. HIT
4. HIT (destroyed, sunk after approx 3 minutes)
Torpedo Depth 15, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
__________________________________________________ _
Changed draughtSubmerged value in NCA_Mogami.sim data file to '0'.
Changed draughtSurfaced value in NCA_Mogami.sim data file to '5.25'.
NOTE: Ship appears to sit in the water 'normally' at this value; rudder & propellers are fully submerged to a reasonable level.
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth 14, Contact/Influence, Fast
1. HIT
2. HIT
3. DUD
4. HIT (destroyed)
Torpedo Depth 15, Contact/Influence, Fast
1. HIT
2. HIT
3. DUD
4. HIT (destroyed, sank after approx 5 minutes)
Torpedo Depth 16, Contact/Influence, Fast
1. HIT
2. HIT
3. DUD
4. DUD
Torpedo Depth 18, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth 18, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth 20, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth 22, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth 23, Contact, Fast
1. HIT
2. MISS (under)
3. HIT
4. HIT (destroyed, sank after approx 7 minutes)
Torpedo Depth 24, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. HIT
4. HIT
Torpedo Depth 24, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)

Torpedo Depth 25, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth 30, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
__________________________________________________ _
Changed draughtSubmerged value in NCA_Mogami.sim data file to '0'.
Changed draughtSurfaced value in NCA_Mogami.sim data file to '10.5'.
NOTE: Ship is visibly submerged much lower than normal, with decks appearing only a few feet above the water line.
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth 27, Contact, Fast
1. HIT (destroyed instantly)
2. HIT
3. HIT
4. HIT
Torpedo Depth 30, Contact, Fast
1. HIT
2. MISS (under)
3. HIT
4. HIT (destroyed)
Torpedo Depth 31, Contact, Fast
1. HIT
2. MISS (under)
3. HIT
4. HIT (destroyed, sunk after approx 3 minutes)
Torpedo Depth 35, Contact, Fast
1. HIT
2. HIT
3. HIT (destroyed instantly)
4. HIT
Torpedo Depth 37, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth 39, Contact, Fast
1. HIT
2. MISS (under)
3. HIT
4. HIT (destroyed)
Torpedo Depth 41, Contact, Fast
1. HIT
2. MISS (under)
3. HIT
4. HIT (destroyed)
Torpedo Depth 42, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth 42, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth 43, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
__________________________________________________ _
Changed draughtSubmerged value in NCA_Mogami.sim data file to '0'.
Changed draughtSurfaced value in NCA_Mogami.sim data file to '0'.
NOTE: Ship appears to be sitting in the water 'normally' at this setting, with water line exactly at the point where the ship changes color from silver to red.
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth 27, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth 28, Contact, Fast
1. HIT
2. MISS (under)
3. HIT
4. HIT (sank after approx 4 minutes)
Torpedo Depth 29, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth 29, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth 30, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
__________________________________________________ _
Changed draughtSubmerged value in NCA_Mogami.sim data file to '0'.
Changed draughtSurfaced value in NCA_Mogami.sim data file to '0'.
Changed gc_height value in NCA_Mogami.sim data file to '12'.
NOTE: Ship appears to be sitting in the water 'normally' at this setting, with water line exactly at the point where the ship changes color from silver to red.
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth 28, Contact, Fast
1. HIT
2. MISS (under)
3. HIT (destroyed instantly)
4. HIT
Torpedo Depth 29, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
__________________________________________________ _
Changed draughtSubmerged value in NCA_Mogami.sim data file to '7'.
Changed draughtSurfaced value in NCA_Mogami.sim data file to '0'.
NOTE: Ship appears to be sitting in the water 'normally' at this setting, with water line exactly at the point where the ship changes color from silver to red.
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth 28, Contact, Fast
1. HIT
2. MISS (under)
3. HIT (destroyed instantly)
4. HIT
Torpedo Depth 29, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
__________________________________________________ _
"Torpedo Attack" training mission against Taiho Fleet Carrier (modified training mission in Mission Editor & replaced Mogami w/ Taiho)
According to in-game recog. manual, Taiho Fleet Carrier has a draft of 31.2 feet.
The NCV_Taiho.sim data file contains the following values:
mass=35000
gc_height=13
fr_ratio=0.5
put_on_water=1
displacementSurfaced=0
draughtSurfaced=0
dragSurfaced=0
displacementSubmerged=0
draughtSubmerged=25
dragSubmerged=0.5
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth: 35, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 36, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 38, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 38, Contact/Influence, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 39, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 39, Contact/Influence, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
Torpedo Depth: 40, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
__________________________________________________
Changed draughtSubmerged value in NCV_Taiho.sim data file to '10.5'.
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth: 38, Contact, Fast
1. HIT
2. HIT
3. HIT
4. HIT (destroyed)
Torpedo Depth: 39, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)
__________________________________________________
Changed draughtSubmerged value in NCV_Taiho.sim data file to '7.0'.
NOTE: This VISIBLY moved the entire ship up vertically in the game so that the propellers and rudder were almost entirely out of the water.
Manual Targeting: DISABLED
Measurement Units: IMPERIAL
Torpedo Depth: 28, Contact, Fast
1. MISS (under)
2. MISS (under)
3. MISS (under)
4. MISS (under)