You just know this isn't going to end well as the skipper forgets one vital detail as he approaches a bridge

As this skipper attempts to go under a bridge there is clearly something he has forgotten to do. This makes for painful viewing as you are just waiting for the inevitable to happen.

Watch this Boat Fail video for a reminder of why you should lower your mast when approaching low bridges.
http://www.youtube.com/watch?v=eBpCwDhAPEY