A European Union Directive may hold the answer to the dispute between the Humber Pilots and ABP (Associated British Ports),
This week the Humber Pilots voted in favour of industrial action as a consequence of a long-running dispute over employment rights.
"Part of the dispute between the two parties is linked to the issue of safety," says Diana Wallis.
"One of the concerns that the Humber Pilots have is that ABP, as nominated 'competent harbour authority' have responsibility for safety on the estuary, and also, as a commercial company are answerable to shareholders.
"The last thing we want is to create another Railtrack in our ports, and this directive should prevent that."