The chief executive of the Steam Packet says the growing number of wind farms in the Irish Sea is a cause for concern for the company.
On Thursday, Dong Energy showcased its plans for an extension to a facility off the coast of Fleetwood, well away from Manx ferry routes.
But Mark Woodward says, while that development isn't a concern, the Irish Sea is becoming increasingly crowded with wind turbines.
He is warning that could create problems in the future: