Side Plating rippled

[magnetman]

I'd love to know how a surveyor would deal with it in their report. 

 

 

[Tacet]

10 hours ago, cuthound said:

 

It can also be caused by inept steerers trying to turn before the boat is fully out of the lock and by pivoting the boat around  the end of the lock landing, where it narrows to go into the lock.

 

I have seen this in several occasions. Doing it once or twice doesn't do any damage, but continually doing it ripples the plates. This is why it is more common on share and hire boats.

A boat cannot generate much rotational inertia when the stern is still in a (narrow) lock; it would be quite an achievement to bash the plates in.

 

Clouting the wing wall would be an easier way of doing it, but the lock narrows would need to be a good way off.  It is nothing like as cruel a cross winding either.

10 hours ago, cuthound said:

 

It can also be caused by inept steerers trying to turn before the boat is fully out of the lock and by pivoting the boat around  the end of the lock landing, where it narrows to go into the lock.

 

I have seen this in several occasions. Doing it once or twice doesn't do any damage, but continually doing it ripples the plates. This is why it is more common on share and hire boats.

A boat cannot generate much rotational inertia when the stern is still in a (narrow) lock; it would be quite an achievement to bash the plates in.

 

Clouting the wing wall would be an easier way of doing it, but the lock narrows would need to be a good way off.  It is nothing like as cruel a cross winding either.

[Cheshire cat]

It's a thin plate 60 ft boat. It would be easy to achieve that effect if going downhill and the boat was caught queuing at every lock. By the time it was at the front of the queue it would be too close to the lock to avoid jamming in the mouth. 60 ft provides a lot of leverage to distort the plates.