Elisabeth on 6 mei 2015. Pollux was the last ship in the Castor-class, and has pennant number P902. "Doop patrouillevaartuig P902 "Pollux"" (in Dutch). Monarchie
Monarchie.be. Retrieved 15 February 2023. "Doop patrouillevaartuig P902 "Pollux"" (in Dutch). Monarchie.be. Retrieved 15 February 2023. "België wil derde
Lobelia, M923 Narcis, and M924 Primula Patrol vessels P901 Castor and P902Pollux Command and logistic support vessel A960 Godetia, oceanographic research
delivered within two years. Both were received, P901 Castor in 2014 and P902Pollux in early 2015. The two vessels are to remain in service until 2044–2045