To dream of dock facing water symbolizes a tough time or difficulty you are expecting to confront. Anxiety about uncertainty or a negative situation that is close at hand. You may feel unprepared or worried about failure.
To dream of a dock facing land symbolizes a tough time that has passed as you move towards a more comfortable or stable time in your life.
If you dream of a dock that collapses it symbolizes mistakes or problems that have occurred while you waiting to confront a problem. It may also reflect mistakes or problems that have occurred as soon as you finished with a problem.