This an occasion that impressed me!
An 11 carriage railtour was taken across to Barry Island.
The accompanying class 66's were over weight for the viaduct.
So 73118 pushed the train (complete with a class 489 as DVT) up the steeply graded causeway (the road to the side of the viaduct @6:15 is level) and over the viaduct to the island.
Probably well within the capabilities of the loco, but still a sight to behold!
some have been re-engined with around 1600hp and because they are the only sub 100t[80t]loco with a short wheel base appart from shunters so needed for trains far and wide the are used on the scottish sleeper within scotland