Dublin Port Company has issued a Notice to Mariners with regard to standard operating procedures or vessels entering, moving within and departing Dundalk Port.
The Co Louth port lies on the other side of the Cooley Peninsula from the border with Northern Ireland at Carlingford Lough, the precise boundary of which remains in dispute and could become a sticking point after Brexit.
The port is equidistant between Dublin and Belfast and has a long history as an independent seaport.
Dundalk Port was amalgamated into Dublin Port Company in 2011 due to previous financial difficulties following the 2008 global recession.