Enjoi the issue your having is you are running "real navigation" - take a look at the last active mod in your list (the right hand collumn of the mod enabler). This disables all map "helpers" and requires you use the navigator to determine your position, the compass to steer your boat, and the map tools (pencils, rulers, protractors, etc) to map out your course and then determine firing solutions for your weapons systems prior to engaging enemy boats.
I am FAR from an authority - I've only been here for about two weeks the best advice i can offer you is to go to the SH5 Mod workshop forum and read through some of the well written / throughout threads for beginners.
SH5 Mod Guide for Beginners by Trevally (with contributions from others)
SH5 Popular mods, tools, technical advice & tactical tips
My second recommendation is that you REALLY consider using one of the "mega mods" created by some of the more senior membership here. They take all of the hassle out of trying to put one together yourself (they have all spent time testing it to ensure stability). I've probably had to install and re-install SH5 about 25 times
because of mistakes on my part or incompatibilities because i didn't understand what i was doing. Two of the more recent all-in-one mega mod's:
"Wolfes from the Deep by Sjizzle"
"Wolves of Steel"
If you do, however, choose to install modifications on your own (again, there is nothing wrong with this but it is daunting for a beginner) i recommend you either directly follow some of the mega mod lists offered by some of the senior members:
Sobers Mega Mod List
Sjizzle's Mega Mod List
Make sure to read through the instructions twice and follow them directly as the author has written them.
I hope this helps.