If your ball is in a water hazard and you do not wish to play it as it lies, you must proceed under the water hazard Rule - the unplayable ball Rule does not apply. Elsewhere on the course, if you believe your ball is unplayable, you may, under penalty of one stroke:
- play a ball from where your last shot was played, or
- drop a ball any distance behind the point where the ball lay keeping a straight line between the hole, the point where the ball lay and the spot on which the ball is dropped, or
- drop a ball within two club-lengths of where the ball lay not nearer the hole.
If your ball is in a bunker you may proceed as above, except that if you are dropping back on a line or within two club-lengths, you must drop a ball in the bunker.