King Willem-Alexander and Queen Maxima are making a state visit to Norway on November 9, 10 and 11 at the invitation of King Harald. On the 3rd day of their visit to Norway, Dutch King and Queen, accompanied by Crown Prince Haakon and Crown Princess Mette-Marit, visited Powerhouse Brattørkaia in Trondheim. The royal party also visited a laboratory at the Norwegian Centre for Plankton Technology.