I thought I had a vague recollection of seeing the Pamir and the Passat in Barry No 2 dock.
"They could not unload at Penarth, so spent some time there while the owner considered other arrangements.
They were eventually taken to the Ranks Mill at Barry Docks because they had better unloading equipment. When they opened the hatches, the holds were full of rats. These had infested the ship during its long wait because the grain was a food source for the local rat population.
Screenshot of Barry Mercantile Marine Office