HMS Mermaid ( F76 ) was a frigate , built for the Ghana Navy as Black Star .
HMS Mermaid ( F76 ) cancelled , launched in 1966 as a private venture and finally purchased by the Royal Navy in 1972 .
HMS Mermaid ( F76 ) was a frigate , built for the Ghana Navy as Black Star but cancelled , launched in 1966 as a private venture and finally purchased by the Royal Navy in 1972 .