[craftyguy]

Or you could use lights and your eyes.. Blindly trusting anything like GPS to guide you through risky situations like that sounds like a good way to ruin your boat.

[dzhiurgis]

I would still do, but you use GPS as a confirmation rather than source of truth.

[throw0101a]

> Or you could use lights and your eyes..

Assuming there's no thick fog.

Though radar, depending on its resolution (which is determined by array/beam width), is also handy.