Rotterdam, Netherlands 2 February 2019
Prinses Beatrix, Netherlands-flagged, ENI 02005698, MMSI 244710864 and call sign PD2061. Laid down by N.V. Scheepwerf v/h fa. J. Hendriks, Dodewaard, Netherlands with yard number 773 on 15 March 1959, launched in January 1960, delivered on 17 February 1960 and until 1995 owned by Koninklike Onderwijs voor de Scheepvaart, Amsterdam, Netherlands.
Prinses Christina, Netherlands-flagged, ENI 02005966, MMSI 244710865 and call sign PDA. Laid down by A. Vuijk&n., Capelle a/ Ijssel, Netherlands in 11 October 1962, launched on 8 April 1964, delivered in 1963 and until 1995 owned by Koninklike Onderwijs voor de Scheepvaart, Amsterdam, Netherlands.
