During the unloading of an aggregate carrier a deck hand approached the shore based crane driver within the prohibited working area to discuss the stowage plan.
Upon leaving the crane, the deck hand stood on a section of walkway grid on the quayside that had worked loose due to vibrations from the crane. The grid had moved forward and was unsupported on its rear edge so when the IP stood on the unsupported side of the walkway, it pivoted on the central supporting beam resulting in both the individual and the grid falling into the river.
The IP was found holding onto part of the jetty structure and was able to exit the water himself using a rope ladder that was deployed. The IP had been wearing a life jacket at the time of the incident and fortunately suffered no injuries.