Blind jumps.

[SummerMcLovin]

Or simply use one survey code (which you will need to refresh regularly, and will be different each time) to jump roughly to that position. I guess the Survey Module would likely work by triangulation, yes.
Not really sure what this has to do with Blind jumps though, given the entire point is that you don't use any coordinates and thus don't aim for anywhere. If you consider hyperspace as somewhere really far away that you can instantly get to, the coordinates choose where you go back to (instantly again) but a blind jump throws you back at random.

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