Ko te RMS Kuini Meri 2 (e kiia ana hoki ko te QM2) he kaipuke moana whakawhiti moana. Ko ia te kaipuke moana nui rawa atu i hangaia, kua mahi hei rangatira o te Cunard Line mai i te angitu o Kuini Elizabeth 2 i te tau 2004. Mai i te tau 2019, ko Kuini Meri 2 anake te kaipuke kaipuke kaipuke e mahi ana hei kaipuke moana. I tapaina te kaipuke hou ko Kuini Meri 2 e Kuini Erihapeti II i te tau 2004 i muri i te RMS Kuini Meri tuatahi o te tau 1936. I tapaina a Kuini Meri ki a Meri o Teck, te hoa wahine o Kingi George V. Na te reti o Kuini Erihapeti 2 i te tau 2008, ko Kuini Meri 2 anake te kaipuke moana whakawhiti i te raina raina i waenga i Southampton, Ingarangi, me New York City, United States, e mahi ana mo tetahi waahanga o ia tau. Ka whakamahia hoki te kaipuke mo te moana moana, tae atu ki te ao.
Ko te RMS Kuini Meri 2