How
low TL cultures handle Land Navigation is
just as off-topic from the original post, in spite of
not being off topic from the mere
title.
But, for the sake of expanding upon the
title...
Navigation by a planet’s stars requires
training, and without a preexisting cultural tradition of specific constellations on that planet to work from,
it’s even harder. Additionally,
most planets wouldn’t have a star conveniently lined up at the North or South Pole; it would usually be
more like navigating around the
Southern Hemisphere, which
doesn’t have a star lined up there. So,
not only would they likely be at
severe penalty to pick up
a trained skill specific to just one planet,
it would have taken time they didn’t spend.
If the planet has a magnetic field, compasses
can be helpful, but they’re
much more useful in conjunction with a map. That
pretty much leaves us
almost entirely with
maps... which they
didn’t do.
There are actually
lots of interesting examples of primitive maps... here are some to consider:
Marshall Islands Stick Charts
Ammassalik Carved Wood Maps
Strip Maps
The last thing a GM can rely on to speed things along is what GURPS calls “Area Knowledge”; which is some basic experience of having been somewhere before, recognizing what you can sense from your memories of that place, recognizing landmarks, and so on. In Traveller, this should work as a bonus to Orienteering rolls, because you’ll recognize landmarks, and stay on track more often.