confuzzled

[Bosje]

hey fellow kaleuns
i mean lieutenant commanders

i picked up SH4 today, looking forward to very much after being a huge fan of SH3/GWX...

so now i am having a great deal of hardship as i try to flip the switch in my brain

here are my initial questions that the manual and the forum (at first glance) do not adress:

-I miss my navigator. how do i know the range at current speed/fuel level. do I have to work it out for myself?
-I miss my watch officer. i no longer have the option to learn about the range and bearing of the nearest target?
-I don't get a weather report?
-I do not have the 'target details' button on my scope menu. is that simply due to my ill-fated attempt of playing it realistically on the first go?
-I can not communicate with the staff like I could in SH3? ie click the chief, navigator, weapons officer etc for orders. those orders are simply the ones in the bottom left menu?

is there anything remotely like the GWX map tools for SH3 around? i've become horribly spoilt plotting the solutions in SH3 and now I just keep searching the screen for some kind of handy thing to aid me in my calculations which so far have been way off.

oh and the manual says there is an option for 'weapon officer assistance' but that option does not appear in my game. any clues?

sorry for being a noob

kind regards,
Bosje

edit: these questions are a bit silly, i'll mess around for a bit first

my final question: which supermod is recommended for starters?