Anchoring the Ships

[IckyATLAS]

When you set a sea state to a very agitated state like 5 or 6, in the ports all ships get banged around.

Is there a way to anchor the ship so that they won't move from its position in a port. It may roll and pitch on its position but not move away.

Unfortunately the ports do not have calm water when the sea is rough, which is not a correct simulation. Ports are made to shield the ships from rough seas, but it seems this is not the case here.