Navigating by Sight

Rori, you also mentioned the expression navigate sight. By sight is like what you see around you use your eyes to go in the right directionn so much better when you say they we like navigate by sight. You can navigate by stars. I don't think many people do that nowadays. Bute. And then you can mention some devices like p s tracking device or g p s ap application on yoursel on. Why daze te say? G p s, the global positioning system. Do you know that the us Military made it available after the soviet unions shot down a korean air lines flight because their g p s was rubbish and they couldn't find their way.