Sentence:  The famous royal yacht Osborne is now considered too old for the use of the Royal family, and is to be replaced by a new turbine yacht—the Alexandra. She has been built on the Clyde and has been launched this week by Princess Louise, the Duchess of Argyll, who is "<WSD>Admiraless</WSD>" of the Western Coast. 
Meaning of the word marked with <WSD> tags:  A female admiral.