The Nationalist Party said it agreed with the stand taken by the government not to allow the C-Star vessel to enter Maltese waters.
The ship, C-Star belongs to an anti-immigration movement called Defend Europe, an organisation set up by French, Italian and German citizens.
The scope of the vessel is to send messages of extremism which the PN does not agree with, the party said in a statement.
“Our values are of solidarity and tolerance which should always win against extremism and racism,” the PN said.