In the late 1960s "Sarina" was briefly owned by Larry Green, an American businessman involved in the motor trade, and was then sold to former British Member of Parliament Loel Guinness in 1969. His membership of the Royal Yacht Squadron entitled the yacht to fly the White ensign when he was aboard. Guinness owned her a decade, systematically restoring and enhancing her each winter, while cruising in the Mediterranean in the summers. In 1979 in declining health he sold "Sarina" to the Australian music entrepreneur and film producer Robert Stigwood. He installed satellite communications, concealing the dome in a new additional false funnel. After two years, after extensive cruising throughout Europe and the Caribbean, Stigwood sold "Sarina" (without the dummy funnel) to a British-resident American art collector, Stanley J. Seeger, who renamed her "Rosenkavalier".