CCIP,
I did some testing of the torpedo damage graphic which might interest you.
It has nothing to do with the size of the warhead. It's displayed under two conditions ... (1) MinRadius >= 2 , (2) Location of the hit.
The location of the hit played a major role. I used the Medium Old Composite Freighter (Akita Maru) as my test subject. There were only two areas (zones) that generated the torpedo damage graphic. Each area only generated one, any more hits within this defined area were not displayed. Coincidently, if you fire the deck gun into an undamaged "Torpedo Damage Display Area" it will not show the holes from the deck gun, only displays torpedo holes, and visa-versa. I tested this by running tropedoes down the length of the ship, back and forth. I tested the same area with the deck gun, running back and forth at the waterline. See Figure #1 to view the two areas where torpedo damage can be displayed. Red area is where torpedo has to hit, from waterline to keel. Green area is left/right center location of damage graphic, from waterline to keel.
If these areas or zones can be modded we can either have the entire ship filled with torpedo holes or filled with deck gun holes, perhaps both. By the way, the ship does take full damage and effects irregardless of whether there's a visible hole in the side of the ship.
I did an off-the-wall test on the MaxRadius. See Figure #2 below to view what a Min/Max value of 99 does with a warhead size of 10. Basically blew the shingles off the house
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Firgure #1 ... Torpedo Damage Display/Hit Location Areas 1 @ 2 Akita Maru.
Note ... Holes shown at waterline are 2 meter size torpedo holes, not deck gun holes.
Figure #2 Warhead Size 10 Min/Max Radius 99
