The points of a compass, in degrees, is your heading. As in, "We are on a ninety-degree course, sir."
You call them kilometres
A salior
barque
A Galleon
A crew
It is a Ketch
a fleet
They were called a Spanish Galleon ...
A sailor.
land lubber
If you're sailing, and following the (International) Racing Rules of Sailing, if you are in the wrong you must do a 720 degree turn (two circles).
Caravel.