NIPPON PARKGOLF ASSOCIATION

OB stands for "out of bounds" and play is prohibited in that area, and OB is marked with white stakes (OB zone inside the course should be marked with white stakes with blue top to distinguish them from stakes that mark OB lines.)

If a ball is OB, the player incurs a penalty, and they must place the ball on a spot within two club lengths of, and not nearer the hole than the point where the ball last crossed the OB line. If tee shot is OB (1 + 2 = 3 shots), the next hit becomes the 4th shot.

There are zones showing the range and lines indicating the boundaries of the OB.

OB is determined at the position where the ball is. The out of bounds line is the nearest inside points at ground level of the stakes. A ball is deemed in bounds still even if only a small part of it lies on the line. The player must obtain confirmation from a fellow competitor whether or not if a ball is OB. A ball that passed through the OB zone or line and stopped at the fairway is deemed in bounds. A player can stand out of bounds to address the ball.