which one???
2 i can think of!
going up to ricky fest, got to wide water lock, and i only tied off with the centre rope under the bridge (stupidly) the force from the lock caught the bow pulled on the centre and nearly rolled my boat!!!
or
a week later, going up the thames, thames goes into flood, just getting through windsor great park (the royals bit) get to the 2nd road bridge and the narrowboat infront of me just stops!!! in the middle of the bridge at full RPM!!! (think it was about 2500) i've seen this and dumped my throttle to everything my poor little thumper will give me!!! inch by inch making my way up to the railway bridge hoping and praying that my boat will hold strong enough to make it to the lock, just passing through the railway bridge and the water was running so fast it hit the railway bridge pillar raised a foot and dropped 2 foot as it passed around the pillar!!!! i was s*****g and brick!!! and about 100 yards after the railway bridge my boat launches off like a polaris missile!!!