Sonar- Radar- inaccuracy?

[spearchucker]

Just got back to SH4 after a long break, and was wondering with the super mods TMO and real fleet boat

Are sonar and radar inaccuracy modeled into the game?

the reason I ask just finished a book, -take her deep- by Admiral I.J. Galantin
and he talks alot about the limitations of the detection systems on the sub

in one place he tells about almost being rammed at periscope depth by a maru they had not heard due to the currents and water temperature messing with equipment and the radar was less than perfect according to his account and I think human error would play a role as well

Sorry if this has been discussed before, or I have over looked something in the readme was just wondering what the situation was

or if that was something that was even possible to mod into the game?

thanks for any answers