I remember one incident with the ship. We were call to the ship because an operator noticed "something" coming out of the counterweigh. We made our way to the ship to find one of the 50mm broker rods (I think there were eight in total) had sheared off in the middle of the weight and was hanging out of the top of the counterweigh, naturally we shut the ride down. The counter weight was made up of a lot of steel plates put together with silicone to prevent water getting in between the plates and causing corrosion. It was thought that the plates must have shifted and sheared the rod in half, lucky it did not come all the way out. It was then decided to weld all the plates together and replace the broker rods with HT bar. If I recall it took us about two weeks, everyone rotating to us an arc cutter to prepare the plates for welding, trouble was the silicone was not affected by the arc cutter and it all had to be cut and removed by hand before it could all be welded correctly. Just imagine the view from working of a cherry picker to get to those counter weights.
Anyway, after the weight was welded up and the new bars put in place every thing was ready to start it up. Everything was going OK with the first run until the ship started to slow down. What had happened was the counter weigh was now one big solid mass, the ship started to vibrate, you could actually see the vibration running up and down the support arms, just like when you throw a rock in a pond. This vibration was so bad that it was decided to remove all the "trimings" off the ship, mast, sails riging etc. what was left was a bear ship, but it still scared the crap out of a lot of people.