You may find this interesting as well Ian.
This is me taking our boat under the two Great Yarmouth bridges that lead out to Breydon water or the North Sea depending on where you wish to go.
The first bridge is the Acle road bridge and the second(the red one) is what used to be the railway bridge which is alongside Great Yarmouth Railway Station.
The trains terminate at that station and no longer go any further so this bridge is now just used as a foot bridge.
The twit on the front of the boat is my brother. There is very little clearance even at low water, so I have my brother up front just to make sure that I'm not going to knock the radar and navigation mast off
If the bridge knocks his head off I know not to go further