"20 N" is the ship's latitude. That tells you that the ship is somewhere
on a circle around the Earth that crosses the Atlantic Ocean, Africa, the
Red Sea, Saudi Arabia, the Arabian Sea, India, the Bay of Bengal, southeast
Asia, the South China Sea, the Pacific Ocean, the Big Island of Hawaii, Mexico,
the Gulf of Mexico, and the Caribbean Sea. You don't know WHERE the ship
is on that circle until they tell you their longitude. If you only know that they're
at 20 N, then there's no way to calculate their longitude.
Africa is located at latitude 20°E and longitude 20°N.
The country located at latitude 20°N and longitude 80°E is India.
latitude: 20 n longitude:160 w
Mexico City is around 20 N latitude 100 W longitude
20 N 80 W is near Cuba.
Latitude: 34°6′0″N Longitude: 118°20′0″W
Latitude: N 31° 8' 49.6698", Longitude: E 75° 20' 28.3844"
Latitude: N 20° 42' 49.4565", Longitude: W 156° 12' 17.4882"
Latitude: N 44° 48' 8.6976"Longitude: E 20° 27' 56.1636"
Latitude: N 48° 51' 37.4229"Longitude: E 2° 20' 18.6846"
Latitude: N 27° 20' 11.1649" , Longitude: W 82° 31' 50.3497"
Latitude: N 20° 33' 17.0989" | Longitude: E 74° 30' 36.1048"