This is the Congreve Memorial which commemorates the life of Walter Norris Congreve, a well respected English army officer who later became the Governor of Malta between 1924 and 1927. Congreve was also awarded the substantial honour of the Victoria Cross.
Congreve was buried between the main island of Malta and the small island (or big rock) of Filfla.
Congreve’s memorial procession in Valletta in 1927.
Photos of the burial at sea which were published in the Illustrated London News.