The right hand side of a naval vessel or airplane.
Iceberg sir. I put her hard-a-starboard and reversed the engines, but she was too close. - A night to remember.
In the sport of crew (rowing) the side in a sweep racing shell on the left from the rowers perspective (or the right side from the perspective of the coxswain). Starboard oars generally are distinguished by a a green marking somewhere on them. Most of the time bow is starboard while port is stroke.
Starboard and bow bitch go hand In hand.