Silent Running and Battle Stations

[ExMachina]

Couple of noob questions that the search feature has failed to answer:

1) Does Silent Running work? I recall reading that in SH4--even in SR mode--the prop revolutions were too fast and needed manual adjustment. So what is the correct number of revolutions for SR (and where to read this data?)

2) What effect does the Battle Stations command have? I've never used it :hmm:

Thanks