I see that your rudder is deflected hard to the left.
I'm not a naval forensics expert, but if I came across a downed sub with its rudder hard to the left, I'd suspect the submarine was traveling at high speed when the rudder became deflected, which caused the submarine to lose attitude control and spiral to the bottom of the ocean.
Incidentially, this is what would happen if you were to go 30 degrees rudder when traveling at 30+kts in a nuclear submarine, so I've heard.
Cheers,
David
PS Regarding the mismatched submarine speeds, the two interfaces do not reference exactly the same speed measurements in terms of how relative speed is measured so they will not always match... normally this is not a problem, but in extreme cases, it can sometimes produce a mismatch.
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LW

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