Keep green buoys on your left when heading upstream.
Nun buoys are typically marked with a single red mark, while can buoys are marked with a single green mark. These marks help to indicate the direction in which boats should pass the buoy in order to navigate safely through the waterway.
Yes, they act like traffic signs and signals.
The captain and his officers, GPS, radar, charts, buoys, and sonar are all used.
Buoys that float and help you not drown
We might go green to help the planet.
What points did sailors use to navigate
They have in-built GPS systems in there antena to help them navigate.
No it should not if you have green feces you have a medical problem you should tell an adult you trust and they will give you more information and (if necessary) help.
To help people navigate.
jbj
Help them navigate through mud
longitude and latitude