Royal Party Sail For South Africa In Battleship -- The King and Queen and the Princesses with other members of the Royal Family, who saw them off, at the entrance to the Royal apartments on the quarterdeck of H.M.S. Vanguard. Left to right - Princess Elizabeth; the Duchess of Kent; the King (in uniform of Admiral of the Fleet); Queen Mary, the King's mother; Queen Elizabeth; the Duke of Gloucester, the King's brother (behind) Princess Margaret and the Princess Royal (sister of the King). With other members of the Royal Family to see them off, King George and Queen Elizabeth and their daughters, Princess Elizabeth and Princess Margaret, boarded H.M.S. Vanguard (42,500 tons), Britain's most modern battleship, at portsmouth en route to South Africa. January 31, 1947.