Yes. It is for all. It is in the updated versions of various sonar/DC combo I stuck all together to make everyone happy. The original easy SonarDC Mod with Snorkel fix, and the tougher SonarDC_20 version.
The visual problem with snorkel is solved simply by the change to visual min height by 1 meter from zero in AI_Sensors.dat file. I found that the snorkel is not picked up by radar long distance contrary to most believe, so I left radar changes alone, not needed ASFAIK.
The snorkel fix is already included in the SensorPAK download, somewhere here on the forum. I placed the snorkel fix and a nice evaluation of the real problem in a text essay write up within that pack.
SensorPAK
http://rapidshare.de/files/3448595/SensorPak.zip.html
EDIT: Updated to include the original SonarDC values with snorkel fix. You can chose between them.
http://www.subsim.com/phpBB/viewtopi...=asc&start=100 Discussion thread, good read.