You only change to invisible the "zoomed-in" version of your sub icon, so, in order to be able to zoom out at the nav-map without your sub icon appearing as it changes from one version to the other (spoiling the whole purpouse) you must change your game's config files so that change only occurs when you zoom way, waaaay out on the nav-map. That way, you can't derive precise information about your location by simply zooming out in the nav-map.
Why not just make both icons invisible (that is, including the zoomed out version)? because that would make all other subs disapear also. Besides, it feels right being able to look at your sub when zoomed out to the max, since that gives you a very vage idea of your general location, which is at least as much as any half-witted navigator could have supplied for you.
|