While poking around seeking to become more familiar with the platforms I happened to notice something peculiar. The data for sensors of a single ship are different depending on how you view the data.

 

I have HCDB-120621 loaded and I'm looking at the DDG-1000 Zumwalt.

 

If I go (in-game with a one ship self-made scenario or in Scenario Editor):

-> Unit Box or Group Box

-> Click on the ship

-> BLUE Surface Unit AA00 -> Display Button ->Unit Display - Range for the SQS-60 = 3.5 Passive & 7.0 Active

or Reports->Platform Display

 

Checking the SQS-60 values in the HCE Platform Editor, the values = 3.5 Passive & 7.0 Active.

 

BUT

- >BLUE Surface Unit AA00 ->Full Button->Active Unit Display-Range for the SQS-60= No Number Passive & 9.5 Active

 

Regarding the 'No Number Passive', initially when I noticed it the number by 17, but I have been unable to get that result again, not sure what path I followed to come up with 17. However, the unnumbered bar that represents the Passive Sonar Range in the Active Unit Display looks like about 17, it is definitely greater than the numbered range of 9.5 for the Active Sonar Range.

 

Clearly the range values for the SQS-60 are different depending on how you view them and by a wide margin, 3.5 vs 17 and 7.0 vs 9.5. I have not investigated if this is a peculiarity of just the SQS-60 as I think that unlikely. I find this confusing and would appreciate enlightenment from any of the salty Harpooners here.

The platform display and unit display use the sonar model to estimate the range against a set noise-level target so you see different ranges than in the platform editor. The Unit Display should work in local sonar conditions whereas the platform display should use generic background noise.

 

In your Zumwalt example the 9.5 number you are seeing is most likely due to the Zumwalt itself being a quiet platform, hence increasing the range.

 

Yes, I'd be interested if you can reproduce the No Number Passive. Is there any chance the SQS-60 was active at that time (I doubt it, just wondering ).