The Starboard flag is green with white stars. It has 13 white stars on a field of green. It can be flown on the right-starboard side of a ship, plane, or car.
The stars are reflective of the word star in starboard.
When being held this flag goes in the right hand. Like horizontal traffic signals the right light is always green, this may help you remember that the right-ward direction is associated with green.
Unlike NATO's Starboard flag which is also green and white, this International Starboard flag does not confuse itself with any nation, as the NATO Starboard flag looks like the flag of Nigeria.