Finding ships with the trailer capacity needed and the beam narrow enough to operate in the chosen dock will not be so easy.
Add the fact that the dock hasn't been used for years and will need dredging and refurbishing. All in three months?
What they need are RoRo ferries for trailers, not car and passenger ferries. They are not easy to come by.
This too. Seriously makes me wonder what was behind the granting of this contract.